TELEPHONE BUG ISDN

VHF telephone bug have to be installed in ISDN telephone systems or on derivations of digital switchboards. It automatically works when you lift the receiver.

Distance of transmission around 700 meters.

3 channels available

Technical data:

• Power supply directly from the telephone line
• Impulse frequency : VHF
• Modulation type: FM max. dev. ± 20KHz
• Harmonic attenuation: min. 18 Dbs
• Dimensions: width 12 mm, depth 8 mm, length 60 mm