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.
Specifications:
•separate settings for day and night
temperature with LED indication
•relay output with LED indication: 5A / 240V AC (1200W)
•telephone pick-up after � 3 or 8 rings
•report when the temperature has fallen below 37.4℉
•automatic hang-up if no code is received within 40 seconds
•possible security codes: from 000 to 999
•day temperature: from 57℉ to 79℉
•night temperature setting: from 43℉ to 64℉
•hysteresis (allowed temperature swing): 0.1℉
•local manual control
•supply voltage: 220VAC
