GSS Infra-Red Transmitters
Both models, the GSS- IR Long Range Transmitter and the GSS- IR Stethoscope Transmitter are provided with special IR transmitting diodes. The transmission of the audio is accomplished by invisible IR light, which cannot be detected with RF bug detectors.

The GSS-IR Stethoscope can  pick up audio through walls, windows, doors, etc. by using a contact microphone and then transmit to specially designed receiver package with built in amplifier & recorder

IR Transmitters:
Technical Specifications  
Transmitting Range approx. 300 m at daytime / 700 m at night
HF Output 25 mW pp
Microphone built in with compressor amplifier
Power Supply 6 V Battery
Operating Time approx. 20 hours continuous
Size 45 x 30 x 15 mm
Weight with battery approx. 20 g
IR Receiver
Technical Specifications:  
Receiver Optical receiver inside a SLR camera
Wave length 930 nm (invisible)
Recorder built in cassette recorder
Recording time 2 x 1 hour
General
Power Supply
12 V ; 8 x 1,5 V UM2
(Babycell)
Camera lens 500 mm / f/8,0
Dimensions 470 x 380 x 220 mm
Weight approx 4,0 kg
Supplied complete with headphone, amplifier, cassette recorder and tripod in customized transport case.
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