Velleman K6502 Thermostat with Remote Control Via The Telephone, 1 Grade to 1...

The thermostat is used as any other one, but with the added facility of choosing the day or Night temperature setting by means of a telephone. The remote control facility is operated via the telephone keypad, thus a dtmf Type Phone is required. From audio signals sent down the line, the user receives a report back on How the thermostat is set. Switching is protected by a security Code, set by the user, which is keyed into the telephone in a simple manner.