If you have a changing schedule, or a vacation home, this device will allow you to adjust the heat remotely through a touch tone phone. It is only compatible with thermostats equipped to accept a telephone interface, which would be the thermostats listed below as related products.
The controlled will connect directly to an exisiting telephone line, and will work with answering machines. The number of rings is programmable, and the access code can be personalized. In the event of a power outage it will retain the settings in memory. A 120 volt AC 60Hz power adapter is included, as is a five meter telephone line.