Protect your home, cabin, computer room, nursery, or any other temperature sensitive area * Automatically calls up to 3 phone numbers when the temperature gets out of range, the power goes out, or if the back-up battery needs replacing * With a simple phone call you can check the current temperature, whether the power is on or off, or the voltage of the backup battery * Continuously calls all 3 phone numbers and gives a voice warning of what the actual problem is * Gain peace of mind knowing you"ll get that call if something happens in your home, or call anytime to see that all is well