Video amplifier

The video amplifier is used to extend the range of Gira door communication systems to include video function. It increases the volume of the incoming video signal to the maximum permissible bus volume and makes this available at the output, thereby compensating for the line attenuation from the source of the video signal to the input of the video amplifier. 

With a video amplifier, the cable length between the door and home station can be extended by 100 m to a maximum of 200 m.

Technical data

- 2 screw terminals for 2-wire bus IN - 2 screw terminals 2-wire bus OUT
W 36mm × H 52mm × D 27mm
Temperature range:
-25°C to +70°C

Product range


Operating instructions

Video amplifier

Operating instructions.

Bestell-Nr 1222 00

PDF, 1,6 MB



Gira door communication

Bestell-Nr 18123 90

PDF, 2,2 MB


Guides / system basics

Gira Door communication system

Basics, planning examples Door communication system Order no. 1736 90

PDF, 5,4 MB


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