Its not as accurate as they say. I bought one for a home made baby rack with back heat. It did a good job for the most part. Kept the air temps for the most part where they were to be at. The only thing I didnt like about it was it didnt last that long. I think maybe six months. I just today got a new one in to replace the one pictured. A different brand but pretty much the same thing. I have used the black ones kind of like the one pictured and have had no trouble with them. Some I have had in use for five years. They still work as good as they did the day I got them. If you have the cash Id go with a Helix or something like that. So my .02 is that the one pictured is junk. Yeah it did get the job done. But didnt last that long. If you are going to go with a cheaper thermostat. Then I would use one of the of these. http://lllreptile.com/store/catalog/...at-with-probe/
Like I said I have used these for years and have had no trouble with them. They do take some time to get dialed in. But get the job done.
I guess I need to start checking the date of when posted. Got in a bit late on this one.