Remote Control by Telephone Controlled by Touch Tone Phone
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Remote Control by Telephone Controlled by Touch Tone Phone, 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)