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Aiphone RY-1824L

Selective Door Release Adaptor


Aiphone RY-1824L

Selective Door Release Adaptor

The RY-1824L door release relay module is an interface between the door release contact on the Aiphone master station or CEU and the actual release mechanism. The contact closure directly from the master station or CEU has limited voltage and current capacity. Use the RY-1824L to ensure that the contact rating will be sufficient for the electric strike or magnetic lock used. The relay’s contact rating supports a majority of door release hardware available. This relay is recommended for all AX, KB, JF, JO, and JP Series systems when using door release and will protect the built-in contact from possible surge damage. Us the RY-1824L with the JP-4MED, KB-3MRD, JF-2MED, JO-1MD, JO-1FD masters and sub stations or the AX-084C, AX-248C, AX-320C central control units.


  • Form C relay for 18-24V DC intercom systems
  • Contacts have a higher rating than stock units
  • Both normally open and normally closed output options



Relay Input

18-24V DC, red and black wires, 22AWG

Relay Output

Brown, yellow, orange wires, 18AWG

Output Rating

8A at 250V AC, 5A at 30V DC


2-conductor from station’s door release contacts to RY-1824L
2-conductor from RY-1824L to release mechanism, with power wired in series

Dimensions (HxWxD)

1-7/16″ x 13/16″ x 7/16″, with wires extending approx. 7-1/2″