Chamberlain SW 2000-X3 PHONE LINE (J9), RADIO INPUT (TB6), 24VAC OUTPUT (TB7), MAGLOCK INPUT (TB4), OBSTRUCTION ALARM (TB17), MASTER/SLAVE I/O INPUT (TB1)

EXIT	Input from exit loop provides signal for optional LiftMaster loop
SENSE	detector add-on board. Operation is the same as Exit Loop input,
	above.
RADIO INPUT (TB6)
RADIO RECV	Convenience terminals provide power and contact connection for a radio
	receiver. Activation is the same as CYCLE.

OBSTRUCTION ALARM (TB17)

Relay contacts close to provide 24DC alarm power if the gate has two consecutive obstruction faults.

LOW BATTERY/ NO AC POWER (TB18)

LOW BATTERY	Activation fully opens or closes the gate, depending the setting of Switch
	S3.
NO AC POWER	Activation registers the date and time of power outages in the gate
	operator transaction buffer.

24VAC OUTPUT (TB7) Terminals provide power (24VAC, 200mA) for peripheral devices.

MAGLOCK INPUT (TB4)

MAGLOCK Relay contacts close when the gate is fully closed.

MASTER/SLAVE I/O INPUT (TB1)

MASTER/SLAVE I/O Input/output terminals are used to control a second gate operator in a Master/Slave system.

PHONE LINE (J9) Terminals connect the telephone line to the gate operator.

Rev F Doc 01-20099 36 of 42