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D. Alarm in connecter
D+
D -
GND
ALARM IN 1-8
N.C
N.O
COM
EX1：Connect GND & Alarm to external IR detector.
RS-485: sends +/ receives +
RS-485: sends -/ receives -
Ground
Alarm input
Relay: Normally close
Relay: Normally open
Relay: Common
EX2：Connect N.O & COM to external siren.
You may connect N.C & COM to external device.
Depending on the external device type,
9
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