I believe they have tamper sensors on them, so you'd know that they were tampered with. It doesn't make them tamper proof, but you will know they were tampered with. Perhaps if you are using them for turning off the A/C if they leave a window or door open, you can just shut off the A/C if they tamper with it, and don't let them turn it back on (not sure if that's 100% feasible).