3013 - 'TRVS' Tape Recorder Vox Switch

TRVS is used to automatically operate a standard tape recorder (not supplied) whenever it detects sound in the target area so that all conversations are recorded.

It simply plugs into the tape recorders REMOTE socket. Features adjustable sensitivity & turn-off delay. This unit can also be used as a low power electronic switch.

Technical Specifications
Supply	4 x AA batteries (Order Code 656.010) but for long-term operation a 6Vdc mains adapter is recommended (Order Code PSU446 with connector 778.106)
Board Dimensions	115x19x12mm
Product Formats	SELF-ASSEMBLY Electronic Kit (KT ) or PRE-ASSEMBLED Electronic Module (AS) more
Documentation	User Manual

• NOTE: Cassette recorders with REMOTE sockets are quite difficult to obtain now but any machine that also takes batteries can be easily adapted. The REMOTE socket is simply a 2.5mm jack socket (one with break contacts) that is connected in series with the low voltage positive power lead that comes from the battery compartment inside the cassette player. To install a socket you simply cut the lead and connect the jack plug in series so that power runs through the closed contact when no jack plug is inserted and through the TRVS when the jack plug is inserted. It really is that easy.