Originally Posted by sandyeggoxj
Those look interesting. Can they display in Fahrenheit as well or just Celsius?
As mentioned, the STC-1000 is celcius only. There's a slightly different model that looks the same as the STC-1000, but is single stage and reads in °F. I have one for my keezer, and two in the control panel for my HERMS. Only reason I bought them is that at the time they were cheaper than the STC-1000, and for those purposes I don't need dual stage control. These days the STC-1000 is generally cheaper.
For my ferm chamber where I need dual stage control and use an STC-1000, I just printed out a °C to °F conversion chart and taped it to the fridge. Like BigFloyd said, after a while you won't even need it.