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The RY-AC/A relay is used to activate an external doorbell, buzzer, or signaling device when a call is received. It can be used for call extension on the LEF, TD-H & IE-8MD systems.
Main Features
Allows an external device to be triggered when the intercom is called
External device will be activated momentarily as long as the call button on the door station is activated
External device and power for it did not supply by Aiphone.
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