12-Pin Alarm Input / Output Connection
Using the 12-pin connector, installers can connect 4 digital alarm inputs and 2 digital alarm
outputs. The alarm pins are serviceable for connecting alarm input and output devices such as
sensors, sirens, or flashing lights to the surveillance system. For the definition of each pin, refer to
the list below.
Audio Input / Output Connection
33506AA
Pin
Definition
1
Alarm OUT NO 1
2
Alarm OUT NC 1
3
Alarm OUT COM 1
4
GROUND
5
Alarm OUT NO 2
6
Alarm OUT NC 2
7
Alarm OUT COM 2
8
GROUND
9
Alarm IN 4
10
Alarm IN 3
11
Alarm IN 2
12
Alarm IN 1
Pin
Definition
1
Audio OUT
2
GROUND
3
Audio IN
21