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Main connector
No. Terminal
symbol
Signal
1
O-
Heartbeat signal power supply (12 V - 24 V DC negative)
2
O
Heartbeat signal output
3
O+
Heartbeat signal power supply (12 V - 24 V DC positive)
4
i-
Buzzer stop signal power supply (12 V - 30 V DC negative)
5
i1
Buzzer stop signal input
6
i2
Unused terminal
7
+
Feed power supply (12 V - 24 V DC positive)
8
-
Feed power supply (12 V - 24 V DC negative)
9
Ground Ground
Enlarged view