Dahua ASA2212A - Network and Wiring Connections

Figure 2-3
Port
Note
+12VIN
DC 12V power
GND
GND
PUSH
Unlock
NC/BELL-
Lock NC or BELL（disconnect triggered）
COM/BELL+
Lock COM or BELL+
NO/BELL-
Lock NO or BELL-（close triggered）
Chart 2-3