Product review (4 stars): Works good
The are pretty good. I bought two then tested the humidity against the weather channel. Only one was accurate and the other a little high by 5 points. They are pretty good otherwise. I can place them in my incubator and see what the temperature and humidity is easily. No back glow, so I do need to shine a light on them to see the numbers. There is a button that changes the degrees from F to C for those interested.