Remote Control By TelephoneThis 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). 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.Features Controlled from a touch tone phone (DTMF) Unit gives audible feedback of output status Adjustable security code Room for three output relays, one relay included Input to monitor the status of a switch from a distance Automatic pickup can be selected for A 8 or A 3 rings Automatic hang-up if no code is entered within 20 secondsSpecifications A relay is included for one output: 10A / 250VAC Power supply: 12VAC or DC / 300mA Dimensions: 4.1 x 5.1" Difficulty: Intermediate (Velleman Level 3 out of 5)
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