- 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
RY-AC/A
External Signaling Relay
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, TD-Z and IE-8MD systems.
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