This 12 volt dc
adapter conceals transmitter can be used with any equipment using that voltage,
(Answering machine, wireless phone and such).
There is no interference
to the equipment operation .
This concealed transmitter
is sensitive enough to pick up even whispers from any corner of the room.
The transmitter
is high - reliability FM modulated hybrid circuit.
Frequency operation
is 433 MHz crystal controlled FM narrow band.
No antenna required.
No battery required (Powered by dc current from the adapter).
Audio bandwidth:
20 Hz to 30 kHz. Range up to 700 feet in open area.
The transmitter
operates with no connection to the answering machine operation.