We travel with 2 dogs and are in fact in Moab, Utah, right now where temperatures are reaching 95 degrees. We have dual A/C's, so I'm covered even if an A/C fails. What I worry about is a power outage, such as because a breaker trips or because someone unplugs us. Here's the system we use, which is based on what I learned from someone else on this forum:
1. Temperature alarm. We use the Control Products FA-I-CCA Intermediate FreezeAlarm. You can set a high temperature so that it will call several numbers if that temperature is reached. AND, I would say more importantly, it will also call if the power goes out.
2. Bluetooth gateway. You connect the temperature alarm and a cell phone to this so that the alarm can use the cell phone to call out.
3. Cell phone. We leave my wife's phone in the RV or you can buy a cheap prepaid cel phone. Must have bluetooth though.
4. Battery backup. You plug the Bluetooth Gateway into this so that if the power goes out, the gateway can still be used to call out.
Basically, you need a temperature alarm, a way for the alarm to call out, and a battery backup so that it can still call out if the power goes out.
