You're gonna want to go with a digital thermometer.
Wal-Mart, Lowe's, Home Depot, Target, etc. sell a brand called Acu-Rite. These thermometers have the unit that measures the "indoor", or ambient temperature, and the humidity. It's also equipped with a probe, which measures the "outdoor" temp, which in your case will be the hot side of the cage.
I also use a Fluker's thermo/hygrometer, which is good too!
Reply With Quote