I have one of these in my snake room.

http://www.amazon.com/gp/product/B00...ls_o02_s00_i00


It sends a message if it goes outside the set temp/humidity range, also if it gets unplugged you get a message that it hasn't heard from the unit. It comes with a remote probe to monitor a second temperature. And you can buy add-on units and connect them to the same gateway.