ReviewsResearch Light Meter

Jonard Tools FPL-5050 Fiber Power Meter & Optical Light Source Kit (-50 to +26 dBm, Single-Mode)

ESSENTIAL KIT: This tool kit provides everything you need to provide a stable light source and measure the relative optical power of fiber optic cables.
POWER METER (FPM-50A): Measure single-mode wavelengths from 800-1650 nm with relative power ranging from -50 to +26 dBm.
LIGHT SOURCE (FLS-50): Provides a stable light source at 1310 nm or 1550 nm wavelengths for the optical power meter.
INCLUDED ADAPTERS: Includes FC, SC, and LC adapters for both power meter and light source for PC/UPC connectorized cables.
INCLUDES: FPM-50A Power Meter, FLS-50 Optical Light Source, and H-22 Carrying Bag with Straps.

Check Stock

Small Aquarium Underwater Ambience with Very Light Bubbling

...erwater quantum meter is the premium tool of choice among leading scientists and serious growers for accurately measuring the photosynthetically active radiation (PAR) underwater..
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. Our underwater quantum meters are specifically designed to measure the intensity of light underwater for biological, chemical, and physical processes in natural waters and aquariums..
UNDERWATER ACCURACY - Underwater PAR measurements can read low when a quantum sensor is calibrated for air. The MQ-510 applies an immersion effect correction factor to get instant, accurate measurements underwater. Precisely measures and combines the intensity of all photons between 400 and 700 nm to give a single PAR reading in µmol m-2 s-1 within 5 % uncertainty. Unlike hobby-grade PAR meters, our meter has a stable, accurate calibration with an accuracy drift rate of less than 2% per year..

Check Stock

Dr.meter Professional LED Light Meter, Digital Illuminance Meter with 0-200,000 Measuring Ranges and 270 Degree Rotatable Detector

★【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..

Check Stock

Coast Polysteel 200 320 Lumen Pure Beam Focusing LED Flashlight with Twist Focus and Stainless Steel Core, Black, 320 Lumens

Poly casing, stainless steel core, IPX8 waterproof, 3 meter drop tested.
On High: 250 lumen light output, 3 hour 30 minute runtime, 121 meter (396 ft.) beam distance.
On Medium: 87 lumen light output, 9 hour runtime, 68 meter (223 ft.) beam distance.
On Low: 26 lumen light output, 35 hour runtime, 37 meter (121 ft.) beam distance.

Check Stock

Amprobe LM-200 LED Light Meter

Dual-scale meter measures visible light from fluorescent, metal halide, high-pressure sodium, and incandescent sources up to 200,000 lumens per square meter (lux) or 20,000 footcandles (fc).
Powered by a 9 V battery (included), and includes a 1.5-meter wire for positioning light sensor and a protective sensor cap.
Manual ranging, data hold freezes readings on the display, maximum recording displays highest reading, zeroing capability resets the null point and angled light cosine correction corrects for angled light.

Check Stock

IDEAL INDUSTRIES INC. 61-686 Digital Light Meter with Remote Sensor, Measure All Visible Light Sources

ACCURATE LIGHT METER: Measures light levels from fluorescent, metal halide, high-pressure sodium, incandescent, and LED light sources. The perfect “must-have” instrument for basic lighting audits to address safety, productivity and energy efficient needs..
MEASURES ALL VISIBLE LIGHT SOURCES: The 61-686 meter measures visible light from LED, fluorescent, metal halide, high-pressure sodium, incandescent and other light sources. Measures in four ranges up to 20,000 Foot Candles or 200,000 Lux..
AUTO SHUT OFF: To extend the life of your battery, the unit will automatically power off after 10 minutes of non-use. Also features a convenient low battery indicator so that you can ensure that your Digital Multi-Meter is always charged and ready to use..
TETHERED SENSOR: Tethered remote sensor with 59 in. (1.5m) cable for remote measurements..
PRODUCT DETAILS: Weighs approx. 8.8 oz. (250 g) with battery. 2000 count LCD display. Includes IDEAL Electrical 61-686 Digital Light Meter, User’s manual, carrying case and 9V battery. +/- 3% basic accuracy..

Check Stock

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....

Check Stock

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.

Check Stock

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 ....

Check Stock

Digital PH Meter, Water Quality Tester with 0-14ph Measurement Range, pH Meter 0.01 High Accuracy Pocket pH Tester, Suitable for Household Drinking Water, Aquarium, Swimming Pool, Hydroponics(1 Piece)

...he tester can accurately test liquids which the temperature is range of 0°C - 60°C (32°F - 140°F). NOTICE: Its core functional part is a sensitive glass probe, which should be well protected and forbid with prolonged exposure to air..
Wide Use: The Pocket Size pH Meter, ideal tester for home and basic laboratory research uses. Suitable for testing the pH of drinking water, domestic food making (like wine, beer), swimming pools, aquariums, spas or hydroponics. It is definitely the perfect test kit for your daily life..
Package Includes: 1x PH Meter, 1x Carrying case, 2x 1.5V LR44 button cells(build-in), 3x pH buffer powder, 1x User's manual. The included detailed manual will show you how to get the best accurate and stable reading..

Check Stock

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..

Check Stock