Chamberlain BG 3000-B1 Installation And Operation Instructions Manual page 38

Barrier gate operator
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CONNECTORS
LIMIT SWITCH (J4) Connector for the left/right limit switch cable.
BATTERY I/O (J11) Connector for use by the Power Fail Operation unit.
PWR INPUT (J1)
MOTOR POWER (J3)Connector for the motor cable.
LOOP DETECTOR
(J15)
LOOP DETECTOR
(J12)
LOOP DETECTOR
(J13)
LOOP DETECTOR
(J14)
Rev C
Connector for AC input power.
Connector for optional LiftMaster Outside Interrupt Loop detector
add-on board.
Connector for optional LiftMaster Inside Interrupt Loop detector add-
on board.
Connector for optional LiftMaster Shadow Loop detector add-on
board.
Connector for optional LiftMaster Exit Loop detector add-on board.
Doc 6001287 (01-20284)
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