Connection Methods
There are five main interfaces on a community alarm base unit.
- The electricity supply, which runs the unit and charges up internal batteries so the alarm works even if the mains have been off for a few hours.
- Phone line, which the base station uses to signal the alarm to the control centre or telephone. When communicating with a control centre, the base station's identity is communicated to the control centre's computer system, often using DTMF. The name and address, as well as other information stored on the control centre's database, are displayed on the operator's computer terminal. The base station also transmits the source within the house of the alarm.
- Aerial, to receive the RF alarm signal from the pendant.
- Alarm button on base unit, in case the pendant is lost.
- Alarm contacts, so the base unit can be connected to smoke or gas detectors.
Read more about this topic: Autodialer Alarm
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