This kit makes it possible to turn up to three devices on or off over the telephone. It is also possible to check the condition of a switch - open or closed, even from the other side of the world. Example: when you are away on holiday, you may switch the lights on and off from time to time, check the alarm or turn on the heating before returning home. A major advantage of this circuit lies in the fact that audio signals are used to tell whether a specific output has been turned on or off. Operation is protected by a user defined code, which is simply keyed in from the telephone keypad. Uses now discontinued UM92870 DTMF decoder IC.
Specifications:
1 relay is included for one output: 10A / 250VAC
automatic pick-up can be selected for 8 or 3 rings automatic hang-up if no code is entered within 20 seconds
supply voltage: 12VAC at 300mA
dimensions: 105 x 130mm 4.1 x 5.1inch recommended housing: D30B
recommended adapter: PS1205
Upgrade Kit consisting of 2 more relays and terminals blocks can be ordered:K6501U
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