garethw said:
Market it as a "centrally heated studio apartment" to Chinese ESL students and just call them every hour and ask how hot it is.
Or, give them a jar of peanut butter, build a pipe from the room to a rat enclosure on your desk.
If it gets too hot the Chinese ESL student will faint, drop the peanut butter and the rat will scamper down the pipe to eat it.
Rat present: green light; rat gone: level 5 alert!