Cooper Security 9651 Instrukcja Instalacji Strona 7

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9651 1. Introduction
11772232 Page 3
Elements of the IAS
An IAS comprises a control unit in a shielded case, with 1 to 4 separate
keypads and various detectors or other devices, for example keyswitches,
connected to programmable zones.
The control unit has eight zone connectors on its printed circuit board (PCB).
Figure 1 shows how these elements are connected. In this example, the
control unit (1) is directly connected to 6 detectors (3) and 2 door contacts (4).
There are 4 keypads (2) on the bus.
1 - Control unit 4 - Door contacts
2 - Keypads 5 - fused mains spur
3 - PIRs
Figure 1. Elements of an Intruder Alarm System
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