TR-05 Telephone Tape Recorder Interface--- The Telephone Recording Interface is used to automatically operate a tape recorder (not supplied) so that all conversations that take place on the target phone line are recorded. It only operates the tape machine while the phone is in use so no tape is wasted or left blank. It is connected in parallel with the phone line and to the tape recorder's REMOTE and MIC sockets. It can also be used with voice activated tape recorders/personal dictation machines. These only need to have a MIC socket as the voice activation circuitry will automatically start and stop the recorder as the phone is used. The device will operate recorders with 1.5-12V battery systems and it also has an onboard polarity switch so that it can be used with either positive or negative wired REMOTE sockets. Dimensions 50x33x15mm.