FermagraF°™ Adhesive LCD Thermometer

For an old guy, it is very hard to see the numbers

I have to get my LED flashlight and shine it directly on each black circle until I find the one with the temp showing. There is not enough contrast between the numbers and the black background for me to read it easily.

Works

Work for me. Have to use my phone light to see clearer.

Reliable

I keep one of these on my carboy and when I sample or move to another vessel the reading matches the immersed thermometer. It does its job well. A bit hard to read sometimes but I don't mind staring at my beer for awhile :)