Lux Light Meter for Photography Grow Plants Led Photometer Lighting Intensity Brightness Measurement Pocket Digital Photo Illuminance Sensor

Works perfectly and is very accurate I tested it with ambient room temperature

Good enough quality to get the job done. Great value. Easy to use. Cover and backlight are a plus!

I purchased this to prove I was not imagining changes in our led ceiling fan/light. Whenever we dim the light to not be so intense, we noticed that after a period of time, the room would be brighter. I was able to prove that the lights get brighter by themselves, which means a defective control on our light. This tool was inexpensive, and it helped prove me right!

Easy to use, great for checking light levels for plants

I love the ease of use with this meter, and it doesn't hurt that it is so very accurate. Great product, would definitely recommend.

This will save any growers plants! A must have for cannabis 💯

Pulled it out of the package and put in a fresh set of batteries and started to check my light sources. I have a photographers light meter but purchased this one for the green house. This meter was reading vastly different outputs for the same type of light source compared to my other meter. Then decided to check the temperature reader. Not even close. Home smart thermostat was reading at 72 degrees and left this meter to adjust for 30min but still read 82 degrees. Then I took it to my basement bathroom that sits at a cool 65-68 degrees and left it in there for 30min to adjust and it read 81 degrees. Sending it back and going to try a different brand.

I had been using a phone app to measure light intensity for Amazon reviews, but I wasn't sure I trusted it. For $20 this looked like a good possibility for accuracy and consistency. Well, maybe. Good: • Photo-sensing head rotates 180°. Allows you to "aim" at the source and still read the screen. • Four Modes : Realtime, Hold, Max, Min. • Lux or Foot-candles. Defaults to Lux. • Backlit screen. Actually, I hadn't noticed this and gave that lack a "Negative", then saw the website and that it was backlit. Press and hold the temp button! Nice. Uncertain: • Accuracy. Generally reads lower than my phone for LEDs and slightly higher for "natural" light (e.g., sunlight and incandescent). It also bounces around somewhat for LEDs, but that may be an LED artifact. • When it boots, the screen shows speeds and RH. One size fits all? See photo. Not so good: • The "temperature" is the ambient temp, not the light's color temp. I'm not sure that I care what the room's temp is. For me, the light's temp is important in reviews. • If you do care what the ambient temp is, the system always defaults to °C. • Auto-powers off unexpectedly. I haven't delved into this much, just happened to notice that I thought I was getting a measurement, but wasn't. All in all, I'd now probably spend a few more dollars and get something a bit better, with light temp. I find I'm still using my phone app for measurements. Edit Feb 2021: I now see that the manufacturer specifies "grow lights" and "room temp". Not quite what I was told initially, but you are now forewarned.