AH-300 Light Meter,Test LED Spectrum,CCT,LUX,Foot Candle,Blue Light Meter,LUX Distribution, Data Exported as a CSV File. AquaHorti

I wouldn’t use this in a professional quality control setting but for a consumer, it’s perfect.I use it all the time for product reviews and camera lighting.The app seams a little bit underdeveloped but functionally, it works 99% of the time. The 1% is due to some rare connectivity issues that I’ve experienced. To fix it, I just take the battery out, wait 10 seconds, and put it back in.Like I said, this rarely happens though - only two times in the last 50+ times that I’ve used it.Accuracy of color temperature is great as well as the lux reading. Note that lux is not the same as lumens but you can do some quick research to figure out how to calculate that.It is super easy to use. You can press the physical button on the device to take a reading or take a reading remotely from the app.For the money, this is an awesome value for hobbyists and consumers.

This meter works great, pairing was easy and the controls are simple and make sense. Unfortunately, I thought this measured CRI and was designed for slightly different purposes. For photography or grow light measurements, this is perfect. If you're an LED lighting/flashlight enthusiast, go for a different meter.

Easy to set up and use

I got one of these to do a comparison of various lights I have. It is easy to use and gives nice consistent results for light levels. The device is light and small. I feel like it is going to get scratched up so I am going to come up with some sort of case.The spectrum are a bit suspect my opinion. Something I did not pick up before I started using the device and read the instructions (and Amazon description closely), it says "Show the light spectrum of white LED which is generated by the 450nm chip excited by the phosphor luminescence". I can deal with that, it gives a spectrum but then it goes on to say, "...not suitable for white light excited by 420nm chips, nor is it suitable for LED grow lights containing 660nm LED, HPS, CMH, halogen lamps, and fluorescent lamps." Wait a second, how am I supposed to know that the LEDs I am measuring are 450nm not 420nm or something else? I measured in direct sunlight and got a nice high reading, as would be expected, the spectrum looked like I would expect except it showed a big contribution on the blue end, which would not be expected. The reading of an old style incandescent light showed more blue than I would expect. At the office (attached), I measured the spectrum of the long skinny fixture lights that would have been fluorescent in the old days. I believe they are LED but can't quickly prove it one way or the other. Are they 450nm? I am barely certain they are LED and you want me to know what's inside? As I said, it's a good meter but I don't entirely trust any reported spectrum.They indicate the "CCT," presumably the "Correlated color temperature." I measured some LED lights around the house that have published light temperature values and the meter is consistent with all of them. Maybe I was lucky with my choice of LED devices but it looks good in cases like that.I'm not sure why they indicate both LUX and Foot Candles since they the same thing (10.764 LUX is one FC) but then, why not? I have rulers that read both inches and centimeters. Whatever.It is easy to complain. This is a good meter and I expect will prove valuable to me in the future, even if the spectrum might be a off in some cases.

Not realy useful design is very limited to specific cases, read description

Works as well as higher priced units.

Attempting to see how much blue light is in my life.Only works on 450nm chip, doesn't work with 420nm chips, nor 660nm, which probably include the 670nm and the 850nmFor those of us looking to eliminate the Blue and keep the Red and Near infrared

This is a useful light meter, especially for the price. It was easy to set up, and pairs easily. While there is a learning curve if this is your first time reading meters, this makes the data visual and pretty easy to judge. The app is good. This makes it easy to adjust your lights, and was surprisingly sensitive for the price. It's hard to say how accurate it is without a standard test, but it seems to work well.