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2.4 Alarm Installation
The unit provides one internal switch for sounding an alarm when the
sensor is activated due to the unwanted entrance of an unknown visitor.
The switch is open in the normal state, but when the alarm is activated,
the switch is closed to power the alarm. The circuitry is shown below.
There are two simple steps for the installation of the alarm.
1.
Prepare the power supply: The alarm needs a power supply, the
power supply comes with the alarm.
2.
Connect the alarm power line: The alarm power line is connected to
the alarm switch terminal.
Figure 2.4: Alarm installation
9
Chapter 2
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