NVR Installation Guide
25
Alarm Device Connection
The green terminal on the rear panel of the NVR can be used to connect alarm input/output device and
surveillance keyboard, which is same as the ALARM IN/OUT interfaces on the rear encoder of
KDM201S.
Pin outs of the green terminal:
Two pairs of alarm input pins: I1 and G, I2 and G.
Two pairs of alarm output pins: O1 and COM1, O2 and COM2
Connect the peripheral alarm device to the NVR, and the circuit diagram show the following:
DC
power
alarm
in AC
power
alarm
in
The alarm output is a switch (non-voltage), external power is necessary to the alarm device. When the
power is DC, keep the voltage 12V (see the previous left figure). When the power is AC, a relay is
compulsive (see the previous right figure).
Surveillance Keyboard Connection
The surveillance keyboard KB10 is supported by NVR, which can control multiple NVR at different time.
Connect your keyboard to NVR by the RS485 connector, RS482A to connector 2, RS485B to 1, as
described in the illustration.
Summary of Contents for NVR2820-16
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