The K6501 Remote Control By Telephone SELF-ASSEMBLY electronic 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.
Note: Optional D30 case mentioned in the manual is no longer available.Specifications