Accessory Wiring; External Control Devices - Chamberlain LA500UL Installation Manual

All control wiring used to connect external devices to Class 2 circuits of the operator must be (QPTZ) Power-Limited Circuit Cables, Type CL2, CL2P,
CL2R, or CL2X or other cable with equivalent or better electrical, mechanical, and flammability ratings.

External control devices

EXIT (2 Terminals)
This input is a soft open command (maintained switch does not override
external safeties and does not reset alarm condition). Used for exit probe,
telephone entry, external exit loop detector, or any device that would
command the gate to open.
Opens a closing gate and holds open an open gate, if maintained,
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pauses Timer-to-Close at OPEN limit.
SHADOW (2 Terminals)
This input is used for external shadow loop detector when loop is
positioned under the swing of the gate.
Holds open gate at open limit
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Only active when the gate is at the OPEN limit, disregarded at all
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other times
Pauses Timer-to-Close at OPEN limit
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INTERRUPT (2 Terminals)
This input is used for photoelectric sensors and external interrupt loop
detector when loop is on the outside of the gate.
Holds open gate at open limit
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Stops and reverses a closing gate to open limit
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Pauses Timer-to-Close at OPEN limit, activates quick close and anti-
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tailgate features when enabled on the expansion board

ACCESSORY WIRING

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