AVer E1008H - Manual (Page 16)

7
 Sensor Pin definition
Pin Definition
1 Sensor Signal 1
2 Sensor Signal 2
3 Sensor Signal 3
4 Sensor Signal 4
G Sensor Ground Signal

Alarm Pin definition
Pin Definition
C1 Relay Common 1
NO Relay Normal Open
NC Relay Normal Close
C2 Relay Common 2
NO Relay Normal Open
NC Relay Normal Close