How often do you want to record both sides of your telephone conversations for future reference or for checking what you both said?   For commercial orders placed over the phone such a recording device is invaluable.   This kit allows you to construct an electronic switch which will automatically turn on your tape recorder when you pick up the handset of your telephone.

Note that your tape recorder must have both a MIC socket and a REMOTE socket on it so that this kit can plug into the recorder and control it.  Cheaper tape recorders tend to leave off these external plug sockets (although if you know where to look they may still be accessed inside the tape unit on the circuit board).

Some countries have laws which do not allow unauthorised attachment of devices to their telephone lines.  They are enforced to varying degrees. 

It is the responsibility of the buyer of this kit not to break these laws in the country where they purchase this kit.

This circuit is designed to work for the newer 1.5V and 3V tape recorders as well as the usual 6V or 12V ones.

The kit is constructed on a single-sided printed circuit board (PCB).