Updated On Apr 2025

Best Hydrofarm Quantum PAR Meter for 2025

List of Top Rated Hydrofarm Quantum PAR Meter from Valuable Customers Feedback.

Updated On Apr 2025

By Customer Ratings

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Optic LED Grow Lights Hydrofarm Quantum PAR Meter - Portable Equipment To Measure LED Ligh... Read Review

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Product Highlights

Features data logging software compatible with Windows XP
Battery power indication with a mini USB cable
Measures up to 10,000 μmol/s with more accuracy

Hanna Instruments

Hanna Instruments HI 9813-6N Waterproof pH/EC/TDS Temperature Meter Clean and Calibration... Read Review

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Product Highlights

Starter set with portable, water-resistant meter for testing pH, electroconductivity, and total dissolved solids, provided with solutions and sachets
Calibration check function to validate instrument performance
Automatic temperature compensation (ATC) to eliminate the need for extra calculations
Alert system when low battery and potential measurement error
On-screen user and calibration guides

bluelab

Bluelab PENPH Pen, Digital Meter for Water with Easy Two Point Calibration and Double Junc... Read Review

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Product Highlights

Measures pH in nutrient solution (acid or alkaline) for precise up and down adjustment with lab quality glass probe; General uses include growing tent, swimming pool, drinking water, aquarium, fish tank, and brewing
This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; Calibration reminder; Durable design for repeated uses; Fully waterproof and floats in solutions
Double junction electrode has a longer lifespan compared to standard probes due to less contamination and is more accurate and reliable than comparable pens, test strips, drops, and more
Combine with ppm meters for full indoor garden nutrients monitoring in water and soil; Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
Made in New Zealand, and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 1-Year Limited Warranty with proof of purchase

P3 P4400 Kill A Watt Electricity Usage Monitor Read Review

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Product Highlights

Choose from the Kill-a-Watt's four settings to monitor your electrical usage
Monitor your electrical usage by day, week, month, or year
Features easy-to-read screen
Electricity usage monitor connects to appliances and assesses efficiency
Large LCD display counts consumption by the kilowatt-hour
Calculates electricity expenses by the day, week, month, or year
Displays volts, amps, and wattage within 0.2 - 2.0percent accuracy
Compatible with inverters; designed for use with AC 115-volt appliances

Triplett

Triplett LT80 LED Illuminance/Light Meter up to 400,000 Lux / 40,000 Fc Read Review

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Product Highlights

Measures light intensity from white LED light sources up to 40k Foot candles (400k Lux) as well as from fluorescent, metal halide, high‐pressure sodium, and incandescent sources
Silicon photodiode sensor and filter
Min/Max/Avg function recalls highest, lowest and average reading
9,999 count LCD display with Data Hold that freezes readings on the display
Auto power off with disable

MARS HYDRO

MARS HYDRO TS 600W LED Grow Light 2x2ft Coverage Sunlike Full Spectrum Grow Lamp Plants Gr... Read Review

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Product Highlights

SUNLIGHT FULL SPECTRUM GROW LIGHT, Infinite close to natural sun light, full spectrum 3000K 5000K and IR 660nm 760nm RED, suit for all plants whole stages indoor growing, rapid plant response from seed to flower
HIGH EFFICIENCY ENERGY SAVING PLANT LIGHT, Consuming only 100 Watts true output with 225 PCS LEDs, more scientifically and energy-efficient! Perfect for 2' x 2' veg stage, 1.5' x 1.5' bloom stage, higher intensity in a MARS HYDRO grow tent, reflective area, or by crossing over using multiple TS600
ACHIEVE ENVIOUSLY LARGE HARVESTS with LED LIGHTING: High-performance gardens with new LED technology provide highest PAR/LUMEN output(430μmol/m².s), Max 2.0g yield per wattage (power draw), achieve maximum quality and quantity, much better than traditional 150w HPS grow systems
HIGH REFLECTIVE HEAT SINK LED GROW SYSTEM, quickly heat dispersing material aluminum reducing light lost to aisles and walls, increase the light intensity up to 20%, allowing your plants receive more energy and without burning your plants for maximum headroom
NOISE-FREE FANLESS LED GROW LAMPS FOR INDOOR PLANTS, Designed for home growers, fans get noisy when long time use, but this LED light board use aluminum make it cooling down instead use fans, bring you a FANLESS QUIET grow experience

Hydrofarm

Hydrofarm APCEM2 Autopilot Desktop CO2 Monitor & Data Logger, Data, White/Blue Read Review

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Product Highlights

CARBON DIOXIDE METER: Autopilot APCEM2 Desktop CO2 Monitor and Data Logger Monitors carbon dioxide, relative humidity, and temperature of your grow room or greenhouse on a clear LED screen
MEMORY: Digital memory chart shows and records stats over an adjustable 24-hour or 7-day period; The trend chart shows variable Min/Hr/Day/Wk for readings of CO2/RH/Temperature
SENSOR & ALARM: 2-channel low drift NDIR gas sensor and audible alarm for low or high CO2 levels
OPERATING TEMPERATURES: Operates in temperatures 32 to 122 degrees F; Operating and storage relative humidity (RH): 0-95%, noncondensing
FUNCTIONALITY: Features multiple hanging options with the hook-and-loop fastener along the back that attaches to an external battery pack (battery pack not included); Green power supply is compatible with a standard smartphone charger; Dimensions (L x W x D): 4.7 x 3.6 x 1.1 inches

Spider Farmer

SPIDER FARMER SF-1000 LED Grow Light Use with Samsung LM301B LEDs Daisy Chain Dimmable Ful... Read Review

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Product Highlights

LOWER RUNNING COSTS & HIGHER-QUALITY YIELDS: SF LED Grow Lights utilize the latest in high yielding LEDs technology today-Samsung LM301B diodes, high Energy Efficiency with 2.5 umol/J, delivers powerful light output and uniform canopy penetration to resulting maximum higher yields. Only consumes 100w, running 50% less power than the HPS or other SMD LEDs or Blurple lamps. Veg footprint is 3 x 3 ft, Flowering footprint is 2 x 2 ft.
CUSTOMIZED DIMMING DESIGN: Upgraded SF series growing lights have a dimming knob and light switch. A single light can be adjusted the light intensity at liberty. Multi-light Connection with unified dimming especially beneficial for large area of indoor growing and commercial planting.
IDEAL FOR ALL GROWTH STAGES: Excellent full spectrum- white, blue, red and IR (3000K, 5000K, 660nm and IR 760nm). 3000K providing more reddish light and the 5000K providing more blueish. The 660nm red and IR light is especially useful during bloom, where it speeds up flowering time and boost yields. Uniformly across the surface and deep into the roots and bottom of canopy for consistent, highest quality flowers.
WELL MADE & SOLID CONSTRUCTION: No Fan Noise Free. High Efficient and reliable MEAN WELL Driver. Aluminum heat sink is thick and sturdy, protective covers for cables; User-Friendly Packaging. Quality components mean the light lasts longer, SF Light takes good cares of you with more considerate design, you can easily save money without purchasing lights frequently.
VALUE FOR THE MONEY: SF LED Plant Lights are often copied but will never have our quality or commitment, we provides 3 years of after-service of local maintenance center(US/CA/UK/DE). Make sure you purchase authentic SF grow lights, really can give you need from a high-quality grow lights – at a price that is affordable. For any questions, feel free to e-mail us and we will help you resolve it. Quality backed by our ironclad!!!

ennoLogic

Light Meter ennoLogic eL200K – Digital Illuminance Lux Meter Photometer 0 to 200,000 Lux –... Read Review

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Product Highlights

THE ENNOLOGIC LIGHT METER eL200K measures illuminance, the amount of light incident on a surface per unit area. Illuminance is measured in lux or foot candle, and the eL200K displays both. It is a great tool for measuring light levels in offices, labs, warehouses, classrooms, and homes. Useful for checking desk and work surface lighting, and to compare light levels in different environments. Indispensable when establishing safe or minimum levels of illumination in a work or living environment.
WORKING ON THE LIGHTING IN YOUR HOME? It can be very difficult to objectively assess light levels with the naked eye - use this meter to get an accurate reading of the actual light levels every time. Compare different lamp types and wattages. Check the light level when installing accent lighting. Or maybe you're replacing incandescent light bulbs with LED light bulbs? Use the ennoLogic lux meter to compare brightness before and after.
DO MY PLANTS GET ENOUGH LIGHT? The quickest way to find out is with a portable luxmeter like this one. Whether it's for your beloved orchids, indoor herb garden, hydroponics setup, plant nursery or greenhouse, the eL200K makes checking light levels easy. Maybe you're using LEC grow lights and are wondering how much light actually gets to the plants? This tool will give you the answer.
MANY OTHER USES: Find out how many lux of light the light box you use for bright light therapy puts out. Or maybe you need it for a science fair project. IMPORTANT NOTE: The ennoLogic lightmeter is NOT for photography. This device does NOT allow you determine the proper exposure for a photo. Its purpose is to show you light INTENSITY in lux or foot candles at any given spot.
RELIABLE AND ROBUST LIGHT METER: Measurement range 0-200,000 lux. Lux and Foot-Candle units. MAX, MIN, and AVERAGE reading display and ANALOG BAR GRAPH DISPLAY. HOLD function. Analog outputs (DC and AC). Large 1.5"" LCD display with BACKLIGHT, easy to read even from a distance. Tripod mount (tripod not included). External power option. Auto power off with override option. Comes with carrying case, 4x AA batteries, analog output interface cable and user manual. 10 YEAR WARRANTY.

Discovery Kids

Discovery #MINDBLOWN Crystal Creatures Set, Lighted Unicorn Crystal Grow STEM Kit, Include... Read Review

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Product Highlights

✔ GROW YOUR OWN CRYSTALS: This crystal growing kit includes all you need to create your own geological formations! We provide the crystal growing solution, tank, tools, and display light!
✔ SHOWCASE YOUR CRYSTALS: Grow your own crystal covered unicorn, then make your creation glow with the built-in LED light!
✔ NO TWO CRYSTALS ARE ALIKE: Crystallization occurs naturally when the liquid cools and hardens causing atoms to bind together in different ways. This ensures a unique pattern every single time a crystal is made, the perfect example of this is the uniqueness of snowflakes.
✔ EXPLORE OUR TOYS: We have toys for boys & girls of all ages: board games & puzzles, plush toys, easels & art kits, science sets & STEM building kits, remote control cars, boats, drones, robots & more!
✔ PLAY & LEARN: At the intersection of inspiration, curiosity, & STEM-based edutainment, our toys help spark the imagination & promote the development of science, technology, engineering & math skills.

LATNEX

LATNEX Light Meter LM-50KL Measures Lux/Fc - LED/Fluorescent, Industrial, Household, and P... Read Review

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Product Highlights

Measuring lights source: LED white light and all visible light.
Measuring intensities of illumination in Lux or footcandles.
Many applications include: Warehouses, factories, office buildings, restaurants, schools, library, hospitals, photographic, many video, parking garages, museums, art galleries, stadiums, building security.

MAXSISUN

MAXSISUN PB1000 Pro Grow Light, 100W LED Grow Lights for Indoor Plants Full Spectrum Uses... Read Review

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Product Highlights

Born for Harvest: The PB Pro Series is an upgraded commercial grade full-cycle horticulture lighting solution. With a handy remote control adjusting 0%-100% brightness to access the power to scale from vegetative growth to higher light intensities in flowering, it is designed for both individual and business indoor growers to seek higher yields of top-shelf quality.
Full Spectrum Ideal for all Growth Phases: MAXISUN light spectrum is tailored by 3500K warm white, 5000K neutral white, a few 660nm deep red, and 730nm to optimize plant growth in indoor/greenhouse environments from seeds to harvest. (germination, clones or cuttings, mothers, vegetative, and flowering applications). It’s ideal for a 2.5 x 2.5ft vegetative area or a 2x 2ft flowering area.
Higher Photon Efficacy: With the help of 350pcs top-end Samsung diodes, the PB1000 Pro offers a truly high efficacy rating of PPF per Joule, only pulls an actual 100 watts from the wall, can achieve better or comparable results than 200 watts HID with 50% less heat and power consumption. You will thank us when you see your light bill.
More Valuable & Reliable: You can use the remote to set the same or different brightness levels for multiple lights by grouping. Daisy chain function keeps your power sockets free and power cords managed. Mean Well Driver, plus premium heavy-duty and solid construction with LEDs protected by glue coating (Rating: IP65), makes the PB Pro Series built to last. Besides, our PB1000 Pro is passively cooled by a thick 3 mm aluminum heat sink. No fans = No noise.
Warranty: MAXSISUN is so confident in the performance of our cutting-edge PB Pro Series that we offer a full 90 days money-back guarantee plus three (3) years limited warranty. Value for money guaranteed, buy MAXSISUN products, and worry-free today.

MARS HYDRO

MARS HYDRO FC-E3000 300Watt LED Grow Light 3X3ft UV IR Full Spectrum Grow Light Bar with 1... Read Review

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Product Highlights

HIGH-EFFICIENCY LED GROW BAR LIGHT: FC-E3000 grow light with 1184pcs BridgeLux Diodes & Meanwell Driver, market-leading PPF 2.7 µmol/J, Max 2.5g yield/watt with 30% higher Average PPE, more cost-effective compared with other same type lights.Only consumes 300W, perfectly cover 3x3ft (personal), 2.5x2.5ft (commercial) grow space.
INNOVATIVE PRECISE UNIFORM LIGHTING: Built-in removable bars interval & dimmability enable the exact & dynamic PPFD control over each of the plant growing stages, FC-E3000 detachable bars deliver highly uniform adjustable,PPFD levels throughout the plant canopy,best for more uniform Density Buds.
SUPERIOR HEAT DISSIPATION: Real Aluminum heatsink together with 4 slim profile passive cooled bars (THINNER & LARGER surface) and detachable Meanwell Driver, create less heat, save 50% energy than other old grow lights! Driver can be mounted remotely on the side of a grow tent/rack or on an adjacent wall to remove heat from grow space.
FULL SPECTRUM UV IR GROW LIGHT: With Yield Max spectrum (660nm Osram enhanced Deep Red,2800k-5000k,730-740nm IR,380-410nm UV LEDs), Average PPFD FC-E3000 LED grow lamp enable cultivators to produce Density Buds, perfect for full-cycle hydroponic,soil,grow tent/room growing.
DIMMABLE COMMERCIAL GROW LIGHT: Cost-efficient,easy dimming & daisy chain max up to 20 lights, IP65 Waterproof, master light easily controlled for commercial & home horticulture. Trusted 3 full years warranty, any question, pls feel free to email us,100% Satisfactory Solution guaranteed!!!

AcuRite

AcuRite 00613 Digital Hygrometer & Indoor Thermometer Pre-Calibrated Humidity Gauge, 3" H... Read Review

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Product Highlights

Maintain the Right Room Temperature and Humidity Levels: This Hygrometer is perfect to pair with humidors or humidifiers
Simple, Easy-to-Read Display: Easily see a snapshot of current conditions at a glance with this temperature gauge and humidity sensor
Daily High and Low Indoor Temperature and Humidity Levels: Easily understand your range of conditions in any room with this home thermometer and humidity detector
Switch Temperature Readings Between Fahrenheit or Celsius: 32 °F to 122 °F (0 °C to 50 °C)
Sleek Design with Multiple Placement Options: Use the integrated keyhole hanger and magnet for perfect wall mounting or the foldout kickstand for placement on any flat surface to have the perfect desk thermometer
Company Based in Lake Geneva, WI, USA — Since 1943

BTMETER

BTMETER BT-881E Digital Illuminance/Light Meter, Measure Lights 0.01~300,000 Lux (0.01~30,... Read Review

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Product Highlights

☀【HIGH ACCURACY】+/- 4% readings +/- 0.5% f.s (10,000 Lux; 1,000 FC); +/- 5% readings +/- 10 digits (300,000 Lux; 30,000FC)
☀【0.4 SECOND RESPONSE】2~3 times sampling per second, Instantly to measure out how much lights you’re getting
☀【WIDE MEASURE RANGE】 This light meter can measure luminance at 0.01~300,000 Lumens, (0.01~30,000 Foot Candles), Which is much wider than the others. Resolution 0.01
☀【EASY TO USE】The light sensor can be rotated 270º, so you don’t need to turn around the light meter to measure lights from different angles. Just rotate the sensor, and you can still read the measure at front
☀【MEMORIZE THE LIGHT READINGS】This Lux Meter can help you record 33 sets of readings,Temp Testing, The RELATIVE measuring mode will show you the difference between current / recorded data. Ideal to use at home, garden, aquarium,plants, school, office, state, LED lights, indoor and outdoor

Seesii

Nanovna SAA-V2 Vector Network Analyzer 10KHz~3GHz HF VHF UHF Antenna Analyzer 3.2" inch To... Read Review

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Product Highlights

NEW UPGRADE FNCTION : Own our Seesii 3GHz Vector Network Analyzer,you can test the standing wave impedance of the antenna, you can also debug the duplexer, the insertion loss of the filter, the isolation, the standing wave, you can also test the attenuation of the cable, shorten the coefficient, the phase, you can also test the amplification of the antenna amplifier
POWERFUL FREQUENCY METER: The improved frequency measurement can measure the antenna frequency of 2.4G up to to 3G. 70dB(50KHz-1.5GHz), 60dB(1.5GHz-3GHz). Reflection Measure S11: 50dB(50KHz-1.5GHz), 40dB(1.5GHz-3GHz); Antenna Analyzer: 1.005(50KHz - 1.5GHz), 1.02(1.5GHz-3GHz)
IMPROVED ACCURACY: NanoVNA SAA-V2 Vector Antenna analyzer equipped with the upgraded shell,Strong anti-interference, improve accuracy.with 3.2 inch touch screen and touchscreen pen,make more accurate and easy to operate.
POWERFUL SECURE POWER SUPPLY: This SAA-V2 is battery powered or USB powered; Built in 2000mAh battery, could work for about 3 hours continuously, if need extra working time, it can be connected to power bank or power source.
COMPATIBLE :The 3GHz second-generation NanoVNA vector network analyzer is based on OwOComm's S-A-A-2 design, and its performance is greatly upgraded.Can be control by PC,computer software compatible with Linux, Windows (7+)

Poniie

Poniie PN2000 Plug-in Kilowatt Electricity Usage Monitor Electrical Power Consumption Watt... Read Review

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Product Highlights

HIGH POWER WATT METER: Counts consumption by Kilowatt-hours, with high-power tolerance rated at Max.16A, compatible with 220v ac
REFINED ACCURACY: Built-in high precision current sensor. Ensures you the best accuracy-Class 1.0 with 0.01W, 0.01V and 0.001A resolution
BACK-LIGHT & MEMORY: With wide view angle, clear backlight large LCD Display and hold over circuit memory for cumulative kilowatt-hours
PROFESSIONAL KILOWATT METER: Start detection 0.20W, you can virtually monitor standby or working power dissipation of all your electronics
BUY WITH CONFIDENCE: 1-YEAR Warranty by Poniie; full ABS fire retardant material housing and comes with 14AWG heavy duty extension cord
EASY TO USE: Checks the quality of power by Watts (active power), Current (true RMS), Voltage (true RMS), Frequency (Hz) and Power Factor
CUMULATIVE TIME: CT only means the run time of the appliance, not the elapse time. It is a parameter to assess your appliance's working performance
WHAT YOU GET: 1x PN2000 Power Usage Monitor, 1x 1 Ft. Heavy Duty 14AWG Extension Cord. 1x User Manual; 1-Year Warranty by Poniie; FCC certified

TEDCO

TEDCO Black Light Science Fun Experiment Kit Read Review

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Product Highlights

Black Finish
Package Quantity: 1
Excellent Quality.
Great Gift Idea.
Satisfaction Ensured.

Dr.meter

Dr.meter Professional LED Light Meter, Digital Illuminance Meter with 0-200,000 Measuring... Read Review

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Product Highlights

★【Professional LED Light Meter】: Whether you're a set designer, or looking to set the mood, proper lighting is a must. The Dr.meter Digital LED Light Meter measures the brightness (up to 200,000 lux) of fluorescent, metal halide, incandescent, and high-pressure sodium lights, guaranteeing the perfect luminosity every time.
★【Ultra Fast, Ultra Precise】: A split second is all it takes for an accurate reading. An advanced built-in calibration sensor measures the light levels at a super fast, twice per second speed.
★【Easy and Intuitive】: Using this digital LED light meter couldn't be easier. Just turn it on, point it at the light source, and check out the reading on the display screen. There are 4 adjustable measuring ranges (200lux, 2,000lux, 20,000lux, 200,000lux). Preprogrammed settings like auto power off, data hold, unit adjustment, and more do the hard work for you.
★【270 Degree Rotatable Detector】: Keep an eye on the light level anywhere in the room. The optical detector rotates a full 270 degree for muti-directional detection.
★【Tripod Mountable】: Have your hands full? Don't sweat it. Thanks to the screw base design, this LED light meter can be placed on a tripod for hands-free use.

AIOMEST

ANNMETER AN-881D Digital Illuminance Meter, Lux Meter with 0.01-400,000 Lux (0.01-40,000 F... Read Review

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Product Highlights

➤【HIGH ACCURACY】: ≤ 10,000 Lux/ 1,000 FC, ± 4% of reading ±0.5% f.S; ≥ 10,000 Lux / 40,000 FC, ±5% of reading ± 10 digits (Calibrated to standard incandescent lamp at color temperature 2856K)
➤【WIDE MEASURE RANGE】: This light meter can also measure luminance at 0.01-400,000 Lumens ( 0.01-40,000 Foot Candles), that is wider than others. It can help you to measure luminosity in more scenes.
➤【FAST RESPONSE】: 2~3 times sampling per second, allows you to capture the intensity of light more accurately. Resolution is 0.01 Lux and repeatability is ± 2%
➤【MULTIPLE FUNCTIONS】: This lumen meter has back light, MIN/Max hold, data hold, data storage, auto-off time of 10 minutes and low battery indication. You can also measure environment temperature. The lux meter can perfectly measure luminosity and temperature, When you are growing plants.
➤【AFTER-SALES SERVICE】: ANNMETER provide 1 years warranty and lifetime technical support. Our product comes with a bag, screwdriver and battery, which can make you more convenient to carry and use. If there is any product issues, please feel free to contact us!

Extech

Extech LT300 Light Meter Read Review

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Product Highlights

Backlight for readings in low light levels
Large LCD display with analog bargraph
Utilizes precision photo diode and color correction filter
Remote light sensor on 12" coiled cable - expandable to 24"
Relative and peak modes

FGI

Apogee SQ-520 Smart Quantum Sensor - USB Output Read Review

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Product Highlights

New, direct from the factory in Logan Utah
FGI is an Apogee authorized reseller and repair center
Comes with neoprene zipper protective pouch from FGI

UNIT FARM

UNIT FARM UF1000 LED Plant Grow Lights Full Spectrum 60W Hydroponic Growing Lamp for 2x2FT... Read Review

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Product Highlights

【High-Efficiency Plant Growing Lamp】 30% more diodes than other SMD panels in the same power draw, offer 30% higher output. 184 diodes only consume 60watts. Equal to 100Watts box style blurple light, or no driver Lamp. works on 110V to 240V.
【Reliable Plant Grow Light】 WITH 100,000H long lifespan OSRAM diodes. 2 times longer than unknown brands SMD LED. CRI up to 90, 10 times higher than blurple light, 30% higher than cheap SMD LED. Easier to observe the health of plants.
【Sunlike Full Spectrum for Indoor Plant】 Mixed 3000K, 5000K, 660nm Red, and 730nm IR Diodes, Make the lamp create a rich spectrum to covers all growth stages. The 660nm red and IR make your plants have nice & big buds, Great boost yields.
【Ultra thin & Flexible LED Panel】 Single panel with the driver that isn't fixed at the top. Can set as the main light, as sidelight around the plants. easily adjust the direction, make the light into every corner. Perfect for space budget growers.
【Tips for Coverage & Hanging】 For microgreens, at 24''-30'' in 3x3FT space. For leafy vegetables like lettuce, at 22-26inch in 2x2FT space. For tomato, herb, or pepper in veg, at 18''-22'' in 2x2FT. 2 units of UF1000， hanging at 18''-22'' in 2x2FT for flowering.
【User-Friendly & worry-free service】 Designed for your tents, planting racks, seedlings, hydroponic rooms, greenhouses. Worry-free 36-month warranty, Repair center in the USA. Service team active On social media, Always solve your problem in time.

AMTAST

Handheld Quantum PAR Meter Quantum Flux Meter 270 ° Rotatable Detector Measure Photosynthe... Read Review

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Product Highlights

This PAR meter is used to measure photosynthetically active radiation (PAR) in the air. If you also need to measure underwater PAR, there’s another set for sale.
With integrated quantum sensor, it measures PAR flux in wavelengths ranging from the 400 to 700 nm and measures up to 2,700 µmol/m²·s.
The detector can rotate freely at 270 degrees, makes the measurement more accurate.
Features with peak hold function and data hold function, easy to read on large LCD screen.
Powered by one 6F22 9V battery (not included), can be used continuously for about 100 hours.

Sun System

Sun System HGC748205 PAR Meter With Remote Sensor Measure Photosynthetically Active Radiat... Read Review

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Product Highlights

Meter with remote sensor measures photo synthetically active radiation (PAR)
Use inside with Sun System grow lights or outside with natural sunlight
Simple and easy to use. Compact size with remote sensor
Made in China

FUTUREHORTI

Light Meter PAR Meter Up to 80,000lx and 3000umol/(㎡s) 365-780nm Lux Meter PPFD Tester Il... Read Review

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Product Highlights

Because the main spectra of LED | CMH, HPS and SUNLIGHT are different, human eyes and plants have different perception abilities for these light sources. FH-100 is specifically designed for different spectra to measure the most accurate LUX or PPFD.
When testing, because you don't need to hold it, you can avoid that the light is blocked by your body.
When testing PPFD in a closed tent, you can close the tent completely and get the most accurate value by using our meter. While for other meters, you must open one side of the tent to do it, so the light will leak out and you can't get the most accurate value.
Save manpower. For example, to test the illuminance of the light source at different distances or different powers, with FH-100, only one person can complete it, instead of two people.
It can test the illuminance value in small spaces or places that cannot be touched by people.

METER

Quantum PAR Meter - High Precision, Grow Light meter, Indoor Plants meter, Good for Growin... Read Review

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Product Highlights

【Quantum Par Meter】This fully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700 nm. It measures up to 10,000 μmol/s compared with 2,000 μmol/s for other meters on the market.
【Save Money:】 Best selling AND useful for your indoor growing plants and 3.get you in the ball park of light requirements and testing for half the cost.
【All Indoor plants】 Data logging capability using standard mini-USB cable and proprietary data logging software and Low power consumption with built-in low battery power indication.
【High Precision】 Constant linear response curve (as opposed to other meters’ Gaussian response) yields higher accuracy independent of wavelength—perfect for measuring LED light output.
【Rechargeable】【Free return/exchange/refund if any concern】【Charging 1-2 hours before use if no power】1year warranty. US patent.

FGI

The Apogee MQ 500 Bundled with Telescopic Wand, Accurate for LED, Rugged, Lightweight, 4 Y... Read Review

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Product Highlights

Quantum Par Meter for LED photosynthetic light measurement for plant growing
Damp rated IP68 construction
Includes Apogee AM-310 Telescopic Wand (Retail Value $59.95)
Authorized Distributor for Apogee Instruments
Made in the USA in Logan Utah

PHOTOBIO

PHOTOBIO LGBQM2 Advanced Quantum PAR Meter (Micromols) Read Review

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Product Highlights

All new for 2021, the Advanced Quantum PAR Meter provides accurate and cost-effective measurement for all light sources used to grow plants. The PHOTOBIO by Phantom Quantum PAR meter is designed to measure PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700nm.
The Advanced light meter comes complete with a remote sensor, two connection cables, the main unit and easy to replace AAA batteries. The PAR meter can store up to 99 measurements for easy reference.
Portable PAR meter with highly accurate remote quantum sensor Measures photosynthetically active radiation (PAR) from 400 to 700 nm Simple and easy to use Record up to 99 readings Includes short coiled and long straight connection cables
There is a proportional relationship between the number of photons absorbed in 400 to 700nm band and the rate of photosynthesis in plants, which is important for horticultural studies and monitoring plant physiology.

Dr.meter

Dr.meter LX1330B Digital Illuminance Light Meter, 0-200,000 Lux Measuring Range Lux Meter Read Review

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Product Highlights

▶【4-Range Settings】: This high-quality digital illuminance/light meter has 4-range settings, 0/200/2,000/20,000/200,000 Lux, for a dynamic metering ability.
▶【High Accuracy】: With auto zeroing capabilities, you can be sure you'll always get a reading with pinpoint accuracy, and it will always be fast!
▶【EZ-Read Display】: Clearly readable info lets you read Units and Signs easily, and stay informed with the over-range indicator.
▶【Convenient Switches】: Get better control over your readings with Data Hold & Peak Data hold for when you're recording information. You'll also benefit from its lower power consumption and short rise and fall times.
▶【Bring Anywhere】: From squeezing into tight places to keeping your load light, you can bring the Dr.Meter Digital Illuminance/light meter wherever you need to. Fits easily into a work bag or large pocket and barely adds any weight. It's the ultimate in light-metering convenience!

FGI

Apogee Instruments MQ-500 Full Spectrum Quantum Meter, Accurate for All Light Sources Incl... Read Review

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Product Highlights

The MQ-500 is used to measure incoming PPFD measurements in outdoor environments, greenhouses, growth chambers, and aquariums.
Full spectrum quantum sensor with a spectral range of 389 to 692 nm ± 5 nm
Optional accessories pictured include the AM-310 Telescoping Extension Wand for reaching further into plant canopy (super useful) and the Apogee AC-100 USB Data Cable to connect and download to PC.
Accurate, Stable Measurements Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year.

FGI

Bundled Apogee MQ-510 (Accurate for LED) with AM-320 Corrosion Resistant Extension Wand Read Review

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Product Highlights

Ideal for underwater measurements of LED, incandescent or natural lighting
Quantum sensor head IP68 waterproof construction, meter is weather resistant.
Built in the USA.
Hard wired quantum sensor with 2M cable
Includes Apogee AM-320 telescoping 1m wand for reaching underwater

URCERI

Light Meter Digital Illuminance Meter Handheld Ambient Temperature Measurer, Range up to 2... Read Review

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Product Highlights

Measures luminosity from 0 to 200,000 Lux and ambient temperature
High accuracy of ±3% rdg ± 8 dgts (<10,000 Lux), ±4% rdg ±10 dgts (>10,000 Lux)
4 digital color LCD screen, MIN/Max readings, data hold, auto power off, and low battery indication
Wide range of application, use lux light meter for set design, factory, office or home use
lightweight and compact, 2 years long period warranty

FGI

Apogee Instruments Affordable MQ-100 Compact PAR Meter with Original Quantum Sensor Read Review

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Product Highlights

AC-100 Cable must be purchased separately.

FGI

Apogee MQ-200 PAR Quantum Separate Sensor with Handheld Meter Read Review

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Product Highlights

Spectral Range 422-655nm
Quantum Par Meter for scientific measurements
Water resistant, rugged, well made.
Compares to Sun System HGC 48205

Klein Tools

Klein Tools ET130 Digital Light Meter Read Review

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Product Highlights

Easy-to-operate meter to monitor light levels
Measurements in foot candles (FC) and Lux
Auto and manual range: 4000 FC; 40,000 Lux
Features backlit LCD display with 40-segment bar graph
Data hold, Max/Min, and Auto Power Off

Hydrofarm

Hydrofarm LGBQM Quantum PAR Meter Micromol Sensor Read Review

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Product Highlights

Data logging capability using standard mini-USB cable and proprietary data logging software available at Hydrofarm
Low power consumption with built-in low Battery power Indication
Constant linear response curve (as opposed to other meters' Gaussian response) yields higher accuracy independent of wavelength - perfect for measuring LED light output
No assembly required
Logging software compatible with Windows XP, 7 & 10 only

Apogee Instruments

Quantum Apogee Underwater Full Spectrum Meter MQ-510 Read Review

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Product Highlights

Whats included: The Apogee MQ-510 Meter and Sensor.
Optional items which can be ordered: AC-100 Data Cable to download readings. AM-320 Salt Water Wand (included in our other bundled listing here on Amazon).

bluelab

Bluelab MONGUA Guardian Monitor for pH, Temperature, and Conductivity (TDS) Measurements i... Read Review

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Product Highlights

Monitor pH up and down, temperature, nutrient (TDS) level in water to maximize your grow and ensure plants get a balanced feed; General uses includes growing tent and reservoir; Selectable conductivity units include TDS, EC, ppm 500, ppm 700 and CF
This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; High and low alarm when outside parameters, selectable units include TDS, EC, ppm 500, ppm 700 and CF
Lab quality glass pH probe with easy two point calibration; Conductivity / temperature probe comes factory calibrated so it's ready to be used; Double junction probe is more accurate than test strips and drops
Combine with Bluelab pen and meter for full garden nutrients monitoring in water and soil; Other features: International power supply, water resistant design; KIT INCLUDES: Calibration solution, EC probe and pH probe, probe care kit is sold separately
Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 2-Year Limited Warranty with proof of purchase (6-month warranty for pH probe)

Groline

GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter Read Review

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bluelab

Bluelab METCOM Combo Meter for pH, Temperature, Conductivity (Nutrient) in Water with Easy... Read Review

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Product Highlights

Monitor 3 parameters in water: Conductivity (TDS) level to ensure plants get a balanced feed, pH up and down, and temperature with lab quality glass probe; Gereral uses include growing tent, swimming pool, drinking water, and aquarium
This hydroponics meter has ATC that provides consistent reading regardless of any fluctuations in temperature; pH probe is double junction; Conductivity scales include EC, PPM, and CF
Combine with Bluelab meters and controllers for full indoor garden nutrients monitoring in water and soil; pH probe requires easy two point calibration; Conductivity and temperature probes come factory calibrated and are ready to use
Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA batteries, pH probe storage cap, and calibration solution, probe care kit is sold separately
Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 5-Year Limited Warranty with proof of purchase (6-month warranty for probes)

FGI

Apogee SQ-420 Smart Quantum Sensor | USB Output Read Review

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Product Highlights

Internal Data Storage The sensor has internal data storage capability with the ability to hold up to 10,000 measurements. This allows the sensor to collect data while connected to most stand-alone 5 V DC power supply such as a USB wall adapter.
No Datalogger Required The sensor can be connected to a desktop or laptop computer via USB 2.0 type A plug, to be used with the ApogeeConnect software (Windows compatible, XP and later; Mac compatible, 10.10 and later). The included Apogee software gives the user control of data logging and calibration settings, provides a real time output display and graph of PPFD measurements and allows the data set to be saved as a csv file.
Independent Calibration The SQ-420 is calibrated independently for sunlight and electric light to improve measurement accuracy. The light source calibration can be selected in the settings menu of the Apogee software.
Spectral Response Original quantum sensors work well for broadband sources (sun, high pressure sodium, metal halide, cool white fluorescent lamps).
USB quantum sensor can be connected directly to a computer for real time measurements and data logging, or act as a stand-alone datalogger when connected to most standard 5 V DC USB power sources

Extech

Extech LT40 LED Light Meter Read Review

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Product Highlights

USB interface for easy setup and data download
Selectable data sampling rates from 1 second to 24 hours
LCD displays current readings, min/max and alarm status
Includes Windows 2000, XP and Vista compatible analysis software

kuman

kuman KW47-US Electricity Usage Monitor Plug Power Watt Voltage Amps Meter with Digital LC... Read Review

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Product Highlights

Electricity usage monitor: Monitor is the killer of the high-cost energy appliance, helping you lower power consumption and save money.
Digital LCD Display: Large clear LCD display for easy reading, the screen size is 47cmx60cm.
Various Parameters: Power(W), Energy (kWh), Voltage, Amps, Power Factor, Cost and Minimum & Maximum Power, ideal for energy consumption monitor.
Overload Protection: Once the whole power exceeds the rated power of monitor, LCD will display "OVERLOAD" with booming noise to remind the user
Built-in Battery:With 3.6V rechargeable battery(NI-MH), It can store electricity. which allows meter to be moved and viewed without losing readings.

CO2Meter

CO2Meter RAD-0501 Day Night CO2 Monitor and Controller for Greenhouses, Grey Read Review

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Product Highlights

Accurately controls CO2 levels in greenhouses or grow rooms
Built-In light sensor that automatically turns off LEDs lights and CO2 enrichment during dark period
Piggy back plug allows for control of CO2 generator or tank with electronic regulator
Piggy back plug allows for control of CO2 generator or tank with electronic regulator
Easiest CO2 controller to use in the industry, Controller automatically adjusts CO2 level according to altitude

Sekonic

Sekonic L-308X-U Flashmate Light Meter (401-305) Read Review

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Product Highlights

Exposures accurate down to a tenth-of-a-stop for both ambient and electronic flash light readings in full-stop mode.
At ISO 100 the ambient EV range is 0 to 19.9 flash f/stops range from f/1.0 to f/90.9 with a shutter-speed span of 60-seconds to 1/8000th-of-a-second (1 sec to 1/500th for flash).
Photo Mode: for still image photographers featuring shutter or aperture priority display of a full range of ambient and flash functions including cord and cordless flash measurement
HD Cine Mode: perfect for DSLR and mirrorless videographers who need to take exposure readings and control light using shutter speeds and frame rates
Cine Mode: designed for use with cinema grade cameras, allows users to select from the most useful frame rates and shutter angles for exposure control with one-tenth stop accuracy.

MAXSISUN

MAXSISUN MF2000 Grow Light, 230 Watt LED Grow Lights for Indoor Plants Full Spectrum Uses... Read Review

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Product Highlights

HIGH-EFFICIENCY. The MAXISUN MF2000 is a great high-efficiency grow light. It is a perfect option if you are looking to light a 2x4 space, add a light to your current space, or use it for clones, seedlings, or mothers. Although it draws only about 230 watts, it gets superior efficiency. It is an ideal LED grow light from seeds to harvest.
TOP QUALITY. The MF2000 is a quantum board style fixture with top-end Samsung and Mean Well components. It uses a total of 700 Samsung diodes. For a 230 watts fixture, this is an excellent number of high-efficiency diodes. It uses 3500K warm white, 5000K neutral white, a few 660nm deep red, and 730nm. It is an excellent full spectrum for vegetating and flowering indoor plants.
UNIQUE FEATURE. Using a remote to set the same brightness (0%-100%) or different brightness for multiple lights by grouping is a terrific idea to provide convenience for large-scale growth. The daisy chain function keeps your power sockets free and power cords managed.
SUPERIOR REFLECTOR. Using an aluminum reflector reduces the loss of light, which ensures plants can absorb more than 90% of the light energy to achieve 30% higher yields. Mounted on top of the reflector, there is a separate 15mm thick ribbed aluminum heat sink. The heat sink helps to manage the heat, and the MF2000 maintains a cooler surface temperature.
3 YEARS WARRANTY. MAXSISUN is so confident in our cutting-edge MF Series's performance that we offer a full 90 days money-back guarantee plus a three (3) years limited warranty. Value for money guaranteed, buy MAXSISUN products, and worry-free today.

Seesii

Portable TinySA Spectrum Analyzer,SEESII Upgraded V0.3.1 Handheld Tiny Frequency Analyzer... Read Review

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Product Highlights

【Frequency Range 】Tiny Spectrum Analyzer with two inputs, high quality MF/HF/VHF input for 0.1MHZ-350MHz, lesser quality UHF input for 240MHz-960MHz. Switchable resolution bandpass filters for both ranges between 2.6kHz and 640kHz. Color display showing 290 scan points covering up to the full low or high frequency rangefrequency range. The tinySA contains all the components of a conventional heterodyne swept spectrum analyzer.
【Built-in Calibration Signal Generator】When not used as Spectrum Analyzer it can be used as Signal Generator, MF/HF/VHF sinus output between 0.1MHZ-350MHz, UHF square wave output between 240MHz-960MHz. Built-in calibration signal generator that is used for automatic self test and low input calibration.
【Tiny Spectrum analyzers & ESD Function】Switchable resolution bandpass filters for both ranges between 2.6kHz and 640kHz.Color display showing 290 scan points covering up to the full low or high frequency range. Bulit-in rechargeable battery allowing a minimum of at least 2 hours portable use.The performance of the 2021 latest version 3.1 will be more stable and sensitive, with a new ESD protrcted function enable the product to have a higher antistatic level and a longer service life.
【PC Control】Connected to a PC via USB it becomes a PC controlled Spectrum Analyzer.The USB interface implements the Serial over USB (CDC) protocol and there is a large set of commands that can be invoked over the serial interface. These command can be used to perform measurements or update internal settings. The driver for Windows will install automatically after connecting to a Windows PC. The driver for Linux is built into the kernel.
【Package List】1x Tiny Spectrum Analyzer; 2 x 20cm RF Cable;1 x USB Cable;1 x SMA Female to Female Connector;1x Touchscreen Pen;1 x SMA Telescopic Antenna.It's very useful as an antenna analyzer for your ham station, easy to set without fancy calibration.The firmware of the tinySA can be updated by the user. New versions of the firmware needed please contact seller for download link.

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