ReviewsBillboard Light Meter

Apogee Instruments MQ-500 Full-Spectrum Quantum PAR Meter & Telescopic Wand Bundle - Digital PPFD Meter for LED Greenhouse Grow Lights, Sunlight, & Plant Monitoring

  • FOR SCIENTISTS & SERIOUS GROWERS - Designed by world-renowned crop physiologist, Bruce Bugbee, PhD, the MQ-500 full-spectrum quantum meter is the premium tool of choice among leading scientists and growers for accurately measuring the photosynthetically active radiation (PAR) from all light sources. Package includes an AM-310 telescopic sensor wand that extends up to 33 inches for measuring hard-to-reach places and a neoprene carrying case..
  • MEASURING PAR IS CRITICAL - An accurate PAR meter is critical for measuring the intensity of light used in the precision growing of plants and other photosynthetic organisms in greenhouses, growth chambers, farms, gardens, aquariums, and additional agricultural systems..
  • QUALITY QUANTUM METER - Unlike cheaper LUX or footcandle sensors which are sometimes marketed as grow light meters, but are meant for measuring light for human vision, our meters feature a laboratory-grade PPFD (photosynthetic photon flux density), or “quantum,” optical detector precisely calibrated to measure the light intensity in µmol m-2 s-1 of the specific color wavelengths emitted by LEDs, HPS, MH, sunlight, and other light sources utilized by plants for photosynthesis..
  • EXTREMELY ACCURATE & STABLE - Precisely measures and combines the in....
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Milwaukee 2235-20 400 Amp Clamp Meter

  • 400A MAX AC/DC CURRENT RANGE: Reads both AC and DC current. With 9 functions it’s the perfect meter for the professional electrician.
  • MORE ACCURATE: Equipped with true RMS accuracy this clamp meter won’t leave you guessing weather your readings are correct.
  • HIGH SAFETY RATING: Feel safe on the job knowing Southwire’s clamp meter is CAT III 600V safety rated.
  • BUILT-IN NON-CONTACT VOLTAGE DETECTOR: Helps identify where live voltage may be present before working on electrical installations or troubleshooting.
  • CONVENIENT THIRD-HAND TEST PROBE HOLDER: The clip on the back of the clamp meter allows you to hold a test lead in one hand and the meter and the other test lead in your other hand making the testing process easier.
  • BUILT IN WORK LIGHT: The built-in work light is an extra convenience feature that allows visibility even in dimly lit areas.
  • WHAT’S INCLUDED: Carrying case, clamp meter, test leads, type K temperature probe with banana plug adapter, AAA batteries and instruction manual.
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Ketosis Breath Tester, Ketone Meter Breathalyzer for Keto Health with 10pc Mouthpieces

  • AUTOMATIC TRAFFIC LIGHT INDICATOR: Portable Ketone breath tester designed to carry around anywhere in your pocket, and make sure you are in ketosis all the time.
  • the ketone breath meter with 3 LED indications: Green Light (Ketosis Reading Successfully), Amber Light (Low Battery), Red Light (Ketosis Reading Unsuccessfully).
  • SO ACCURACY: please do not compare the testing readings with the the traditional meter because of different analyzing methods, our ketone breath analyzer is tracking the breath acetone which is a better measure of what your body is actually using for fuel because acetone in our breath is an actual byproduct of fat burning.
  • 4 LCD DISPLAY COLORS: 0 reading with WHITE background, 0.1-2.9 readings with GREEN background, 3.0-4.9 readings with YELLOW background and over 5.0 readings with RED background.
  • powered by 2*AAA batteries (not included).
  • PROFESSIONAL GRADE ACCURACY: This ketone Breath meter is an easy-using and self-monitoring device for individuals following on a keto life. Breath ketosis meter saves you from finger pricks, and the device can be used repeatedly by replacing the mouthpiece, which saves your money for testing from continiously buying strips, also more convenient because you only need to breathe with the monitor ....
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EMF Meter, Rechargeable Digital Electromagnetic Field Radiation Detector Hand-held Digital LCD EMF Detector, Great Tester for Home EMF Inspections, Office, Outdoor and Ghost Hunting

  • Why Do I Need An EMF Detector?- There is a good reason I’m always suggesting people purchase an EMF meter once they understand how dangerous long-term exposure to EMF radiation is..
  • No Guess Working Enjoy Your Life- Have a carry-on EMF Reader, then take no guess working with your home devices..
  • Does an EMF Meter Detect WiFi?- RDINSCOS EMF Meter that has the capability of reading radio frequency radiation is capable of detecting WiFi, since WiFi is a type of radio frequency transmission..
  • Auto sound-light alarm- When the test readings exceed the safe value,the EMF radiation meter will alarm automatically, the screen light will flash, and show “Harmful” on display..
  • The EMF METER itself is not electrical radiation- Direct current is not electric radiation, so no worry about the EMF meter itself..
  • Warranty – All RDINSCOS EMF meter are backed by a full 3-year warranty..
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Southwire - 65031640 CLAMP METER, 400A AC/DC 21530T,Black/Brown

  • 400A MAX AC CURRENT RANGE: Reads AC current. With 8 functions it’s the perfect meter for the beginner or professional electrician.
  • MORE ACCURATE: Equipped with true RMS accuracy this clamp meter won’t leave you guessing weather your readings are correct.
  • HIGH SAFETY RATING: Feel safe on the job knowing Southwire’s clamp meter is CAT III 600V safety rated.
  • MIN/MAX: Allows you to capture and display a MAXIMUM or MINIMUM reading such as when conducting a load test on a car battery.
  • BUILT-IN NON-CONTACT VOLTAGE DETECTOR: Helps identify where live AC voltage may be present before working on electrical installations or troubleshooting.
  • CONVENIENT THIRD-HAND TEST PROBE HOLDER: The clip on the back of the clamp meter allows you to hold a test lead in one hand and the meter and the other test lead in your other hand making the testing process easier.
  • BUILT IN WORK LIGHT: The built-in work light is an extra convenience feature that allows visibility even in dimly lit areas.
  • WHAT’S INCLUDED: Carrying case, clamp meter, test leads, type K temperature probe with banana plug adapter, AAA batteries and instruction manual.
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INFURIDER Digital Light Lux Meter,Accurate Measures Lighting to 400,000Lux/40,000FC,Handheld Illuminance Foot Candle Meter with 270 Rotating Sensor for Plants LED and Photography

  • ☀【Ultra Pro Light Meter】Our digital luxmeter can accurately measure illuminance to 400,000 Lux/40,000FC and ambient temperature.High accuracy:+/-4% of light measures,resolution:0.01.High response rate of twice per second for fast readings..
  • ☀【Whether Light Level Enough?】The light sensor can rotate 270 degree!You can be sure that this light meter will capture the light from different angles.Suitable for checking your LED sources,plants, photography indoor and outdoor,whether get enough light level..
  • ☀【Multifunction Photometer】YF-8801B lux meter come with 2.3 inches black and white high brightness screen.
  • Analog bar-graph indication,and low battery indication.Auto/manual measurement range for a dynamic metering ability..
  • ☀【Easy to Operation】This digital light meter also can save 32 sets of lighting data.Press “REC” to record current reading, LONG PRESS “REC” to record constantly. With [REL] button can auto zeroing capabilities, helping you to obtain more accurate illuminance measurement..
  • ☀【100% Guarantee】Comes with a 9V battery and high quality zippered carrying bag.Handheld and compact design make the light level monitoring more convenient for both indoor and....
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Light Meter HOLDPEAK HP-881D Digital Photographic Light Meters 0.01-400,000 Lux /1-40,000 FC 270° Rotatable Detector for Photography LED Lights Plants Lumen Meter

  • ✅【Professional LED Light Meter】HP-881D come with wide measure range 0.1 - 400,000Lux/1 - 40,000FC,So whether you're a photographer, a designer, or a plant lovers,this light meter will meet all your needs..
  • ✅【270 Degree Rotatable Detector】Keep an eye on the light level anywhere in the room.
  • The light meter sensor can rotate 270 degrees, So you don't need to move the light meter,just need to rotate the degrees to measure the lights that you need..
  • ✅【High Accuracy】±4%rdg ±0.5%f.s (less 10,000 Lux.
  • 1,000 FC) / ±5%rdg ±10dgt (over 10,000 Lux.
  • ✅【Multifunction And Easy To Use】Rapid response, Auto Zeroing, Data HoldPeak-Data hold switches, Low power consumption, MAX/MIN Hold,Relative Value,℃/℉ Switch,with LCD backlit.
  • ✅【After-Sales Guarantee】HOLDPEAK come with 1 year warranty and lifetime technical support.If there is any product issues, please feel free to contact us!.
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AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, Non-contact Voltage Detection

  • ...onductor without touching or interrupting the circuit. Its slim and compact size makes it easy to operate in narrow spaces.
  • Thoughtful Design: Support Data Hold, Max/Min, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package.
  • Non-contact Voltage Testing: This Clamp Meter features non-contact voltage testing with sound and light alarm. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a quick beep.
  • Additional Tips: The clamp meter has passed the environmental pollution degree 2 and overvoltage category III 600V safety standards. Combined with Amazon's excellent delivery, we provide lifetime technical support..
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SENEYE Reef Aquarium Monitor and Par Meter

  • ☀【HIGH ACCURACY】+/- 4% readings +/- 0.5% f.s (10,000 Lux.
  • +/- 5% readings +/- 10 digits (300,000 Lux.
  • ☀【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.
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AstroAI Digital Clamp Meter Multimeter 4000 Counts Auto-ranging Amp Voltage Tester Measuring AC/DC Voltage & Current Resistance Capacitance Frequency Continuity Live Wire Test NCV Detection

  • ...ures AC/DC Current, AC/DC Voltage, Capacitance, Frequency, Duty Cycle, Resistance, Diode, Continuity and Live Wire Tests. This clamp meter is a really useful tool for solving industrial and household electrical issues..
  • Non-contact Voltage Testing: This Clamp Meter features non-contact voltage testing with sound and light alarms. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a brief beep.
  • Multifunctional & Easy to read: Support Data Hold, Max/Min, Auto power off after 15 minutes inactivity, low battery indicator and continuity buzzer. The LCD Backlit Screen and Flashlight make it easy to use in a dark working area. ZERO function decreases the data error influenced by the Earth’s magnetic field, and helps you to obtain a more accurate measurement..
  • Large Jaw Opening: The jaw opening measures current in a conductor without touching or interrupting the circuit. Its slim and compact size makes it easy to operate in narrow spaces..
  • Additional Tips: This clamp meter has passed the environmental pollution test degree 2 and overvoltage category III 600V safety standards. Comb....
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Olmlmo Emf Meter,Ghost Hunting Equipment,Radiation Detector,Digital Electromagnetic Field Radiation Detector Digital LCD Emf Detector,Tester for Home Emf Inspections, Office,Outdoor and Ghost Hunting

  • ... meter tests magnetic field, instead of just one sensor compared with others emf meters. The ghost detector’s testing magnetic field radiation with optional units mG/µT, the electric field with unit V/m.EMF meters couldn’t test the RF value and temperature.
  • Sound &Light Alarm : When you use the emf meter ,the emf testing result exceeds the value less than (0.4µT (4mG) or 40V/m), the emf reader top light color is green.
  • the emf meter’s screen will turn yellow and the indicator will be flashing when it’s detecting between 4-40 mG, red if it’s reading more then 40 mG.A sound alarm will give you the same data in higher sound frequencies, which you can also disable.
  • Multi-function & Power Saving: Our emf detector ghost hunting testing average or peak value(Maximum) reading, and one bottom hold the data for a view. This ghost hunting equipment has large -light LCD is clear for viewing. Olmlmo EMF meter will power off after 15 minutes without operation.
  • Widely Applications: The EMF meter is suitable for testing TV, computer, printer, microwave oven, refrigerators, cell towers, wire towers, low-frequency home ap....
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