Description Of Components - Abus AZ4220 Installationsanleitung

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5. Description of Components

1.) Error-LED
2.) OK-LED
3.) Signalling device
4.) Display
5.) Selection key
6.) Delete key
7.) Bus input
Normally an 8x0.22mm alarm cable is used. Use screened
cables in areas with interference frequencies (see also In-
stallation Instructions).
Important: The maximum distance to the furthest extension
must not exceed 1 km.
Important: The voltage supply on the operating panels
must not fall below 10.5V DC (recommendation: min. 12V).
If the voltage is too low, duplicate the voltage leads with
remaining cables or use an additional voltage supply.
Before connecting the radio extension, make sure than the
alarm centre is disconnected from the power supply. The
first extension to the bus is connected to the alarm centre
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