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Expansion Units
Master and Expansion UC625 Units
All UC625 units shipped after August 2004 are equipped with a 10 way ribbon connector that allows
the user to connect either a single or multiple expansion UC625 units. Examples
If a user requires a 56-way alarm unit it is possible to Install
1 x 28 way UC625 master Unit and 1 x 28 way UC625 expansion unit
If a user requires a 84-way alarm unit it is possible to install
1 x 28 way UC625 aster Unit and 2 x 28 way UC625 expansion units
Note:-Integral pushbuttons, audible and common alarm relays are only fitted to the master unit and the
control signals required between the master and expansion units are passed via the factory supplied
10 way ribbon cable. The following connections are made via the 10 way ribbon cable
PIN REF FUNCTION
1 OV Common Reference
2 GP Group Signal
3 GPR Group Reflash Signal
4 HNA Horn A Signal
5 HNB Horn B Signal
6 RES Reset Signal
7 ACK Acknowledge Signal
8 ST System Test Signal
9 First First Reset Signal
10 Flash Flash Synchronisation
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