Counter intercom set (desk, microphone and speaker)
Intercommunication counter-type system. Desktop internal unit with microphone, loudspeaker, adjustable volume, noise reduction circuit and recording output. Microphone and loudspeaker for external side. Communication half-duplex with automatic switching. Power supply 14 V DC included. Output power 2 x 4 W RMS, frequency response from 20 to 16.000 Hz. OPTIMUS model ref. SIV-40.