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Chapter 2
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
Summary of Contents for DVR-520
Page 1: ...DVR 520 4 Channel Smart DVR Series with Removable HDD Bay User s Manual...
Page 12: ...DVR 520 User s Manual xii...
Page 24: ...DVR 520 User s Manual 10...
Page 28: ...DVR 520 User s Manual 14 OnScreen Display OSD Figure 3 3 Powering on the system...
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Page 62: ...DVR 520 User s Manual 48...
Page 66: ...DVR 520 User s Manual 52...