Extend an Aiphone intercom call to an external bell, buzzer, chime, or compatible signaling device with the Aiphone RY-AC/A External Signaling Relay.

The RY-AC/A activates an external signaling device whenever a call is received at the connected Aiphone intercom station. The external device remains activated momentarily for as long as the door-station call button is pressed.

This makes the RY-AC/A ideal for locations where personnel may not always be close enough to hear the intercom's built-in call tone.

Key Features

• Genuine Aiphone RY-AC/A

• External signaling relay

• Also known as a call extension relay

• Activates when an intercom call is received

• Allows connection of an external:

  • Bell

  • Buzzer

  • Chime

  • Compatible signaling device

• External signal remains active while the door-station call button is pressed

• Powered by the connected Aiphone master station

• Compact relay enclosure

• Designed for compatible analog Aiphone intercom systems

• Ideal for commercial offices, warehouses, reception areas, and noisy environments

Product Specifications

Manufacturer: Aiphone
Model: RY-AC/A
Product Type: External Signaling Relay
Power Source: 12VDC supplied by compatible master station
Contact Rating: 240VAC at 0.3A / 24VDC at 1A
Dimensions: 4-1/8" H x 2-7/16" W x 1-5/8" D
Application: Intercom Call Extension / External Signaling

How It Works

When a visitor presses the call button at the connected Aiphone door station, the RY-AC/A activates its relay output.

The relay can then trigger a compatible external signaling device such as:

• Doorbell

• Buzzer

• Chime

• Mechanical signaling device

The external signaling device remains activated momentarily while the door-station call button is being pressed.

Compatible Aiphone Systems

Aiphone lists the RY-AC/A for compatible systems including:

• C-123L/A

• C-123LW

• IE-8 Series

• LEF Series

• LEM Series

• LEM-1DL Series

• TD-H Series

For some systems, an additional adaptor is required.

DAK-2S Requirement

The DAK-2S Dual Master Adaptor is required when the RY-AC/A is used with certain Aiphone systems including:

• C-123L/A

• C-123LW

• LEM Series

• LEM-1DL Series

Verify the specific system wiring diagram before installation.

External Signaling Device Requirements

Aiphone specifies that connected signaling equipment should be compatible with the relay contact ratings.

For DC applications, Aiphone recommends a mechanical-type signaling device.

Do not exceed:

• 240VAC at 0.3A

• 24VDC at 1A

The RY-AC/A provides relay switching only and does not serve as the primary power supply for the external signaling device.

Ideal Applications

• Commercial offices

• Warehouses

• Manufacturing facilities

• Reception areas

• Schools

• Healthcare facilities

• Security stations

• Noisy work environments

• Remote offices

• Multi-room facilities

• Intercom call-extension applications

Important Ordering Information

Before ordering, verify:

• Existing Aiphone intercom series

• RY-AC/A compatibility

• External signaling device voltage

• External signaling device current draw

• Whether a DAK-2S adaptor is required