AVer SEB3104H - Manual (Page 12)

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1.4 Audio, Sensor, Relay and RS485 pinhole allocation
The Sensor and Alarm enable you to connect 4 sensor inputs, 2 relay outputs and 1 PTZ camera.
Just connect the external sensor, relay, and PTZ camera pin directly to the pinhole. Check the
table below and locate which pinhole is assigned to sensor input and relay output.
1.4.1 Audio In/Out Pin Definition
Number Pin Definition
1 1 Audio in signal
2 2 Audio in signal
3 3 Audio in signal
4 4 Audio in signal
5 G Audio ground single
6 1 Audio out signal
7 2 Audio out signal
8 G Audio ground single
1.4.2 Sensor Pin Definition
Number Pin Definition
9 1 Sensor 1 signal
10 2 Sensor 2 signal
11 G Sensor ground
12 3 Sensor 3 signal
13 4 Sensor 4 signal
14 G Sensor ground
1.4.3 Relay Pin Definition
Number Pin Definition
15 C1 Relay Common 1
16 NO Relay Normal Open
17 NC Relay Normal Close
18 C2 Relay Common 2
19 NO Relay Normal Open
20 NC Relay Normal Close