![Aiphone RY-IP44 IP Input/Output Relay Adapter Aiphone RY-IP44 IP Input/Output Relay Adapter](https://cdn11.bigcommerce.com/s-u3uxlvxq3h/images/stencil/400x400/products/7891/25218/RY-IP44-2__68719.1584436465.jpg?c=1)
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Aiphone RY-1824L acts as an interface between a door release contact on a compatible Aiphone master station and the actual door strike. Using RY-1824L ensures that the door strike will receive a proper contact rating, so it will open reliably. It also protects the contact from damage by electrical surges.