Gira 1288 00, Operating Instructions Manual

Page: 4 / 44

4
System information
The Gira door communication system operates with the volt-
age type SELV.
In systems with video components, up to 28 home stations
and two door stations with colour cameras can be connected
to the 2-wire bus.
In systems with audio components, systems with up to
70 audio devices can be realised with certain system
configurations, e.g.
1 Built-in speaker with 5 add-on modules and
68 Surface-mounted hands-free feature home station.
Depending on the system size, a maximum of 3 home stations
can be operated in parallel per call button
A call-tone differentiation is made between the following calls
at the home stations:
• door call (initiated by call button)
• floor call (initiated by floor-call button)
• internal call (initiated by call button for home stations)
Cabling and cable arrangement
Cables with a wire diameter of 0.6 or 0.8 mm can be used as
bus lines.
The following cable types are suitable for use as bus lines:
• J-Y(ST)Y (communication line)
• YR (insulated bell wiring)
• A-2Y(L)2Y (communication cable)
Planning software
An exact determination of the maximum system size is
possible with the planning software at www.gira.de.
Cabling for new installation
We recommend communication line "J-Y(ST)Y" for new
installations of the Gira door communication system.