Add external signaling or entrance-light control to an Aiphone GT Series intercom system with the Aiphone GT-RY External Signaling / Option Relay.

The GT-RY provides a normally open relay contact that can be used to activate compatible external devices when an entrance or guard station calls a tenant. It can also be configured to activate an entrance light while the tenant is communicating with the entrance station.

Compact and system-powered, the GT-RY is ideal for applications requiring an additional buzzer, notification device, or automatic entrance lighting.

Key Features

• Genuine Aiphone GT-RY

• External signaling / option relay

• Designed for Aiphone GT Series

• Normally open output contact

• Provides external signaling during incoming calls

• Supports additional buzzer applications

• Supports entrance-light control

• 24VDC input

• Output rated 24V AC/DC, 0.5A

• Compatible with applicable tenant-station option connectors

• Compact relay module

• No programming required at the relay itself

• TAA compliant

• One GT-RY required per entrance station for applicable entrance-light-control applications

Product Specifications

Manufacturer: Aiphone
Model: GT-RY
Series: GT Series
Product Type: External Signaling / Option Relay
Input Power: 24VDC
Output Type: Normally Open Relay Contact
Contact Type: Semiconductor
Contact Rating: 24V AC/DC, 0.5A Maximum
Height: 1-3/8"
Width: 2-3/16"
Depth: 7/8"
Approximate Weight: 0.067 lb / 30g
TAA Compliant: Yes
Application: External Signaling / Entrance-Light Control

External Call Signaling

The GT-RY can provide a contact closure when a compatible GT Series tenant station receives a call.

This allows the system to activate an additional notification device such as:

• Buzzer

• Bell

• Auxiliary sounder

• Visual indicator

• Interface relay

• Other compatible low-voltage signaling equipment

This is useful where the normal tenant-station call tone may not be loud enough or may not be heard throughout the space.

Additional Buzzer Operation

When configured for external signaling, the GT-RY can activate an additional buzzer when a call is received from a compatible:

• GT Series entrance station

• GT Series security guard station

Aiphone specifies that the external buzzer output operates for approximately:

10 Seconds

during the incoming call, in addition to the normal tenant-station call tone.

Entrance Light Control

The GT-RY can also be used to automatically activate an entrance light.

When a GT Series entrance station calls a tenant:

1. The entrance station initiates the tenant call

2. The GT-RY activates

3. The connected entrance light turns on

4. The light remains active while communication continues

5. The relay releases when the tenant terminates communication

This can improve visitor visibility at entrances during low-light conditions.

Normally Open Contact

The GT-RY provides a Normally Open contact output.

Maximum rating:

24V AC/DC, 0.5A

The connected load must remain within the GT-RY's electrical rating.

For equipment exceeding this rating, use the GT-RY to operate an appropriately rated secondary relay or interface.

24VDC Operation

The GT-RY requires:

24VDC

In GT Series applications, its input is connected through the applicable entrance or tenant-station option connection according to the required function.

A separate local power supply is not normally connected directly to the relay when installed according to Aiphone's standard GT Series diagrams.

Tenant Station Option Connector

For external signaling at a tenant station, Aiphone requires the option connector supplied with the applicable tenant station.

The GT-RY connects to the designated RY / RY option wiring.

Applicable GT tenant equipment can include current stations such as:

• GT-1A – Audio Open-Voice Tenant Station

• GT-1D – Audio Handset Tenant Station

• GT-1M3 – 3.5" Video Tenant Station

• GT-1C7 – 7" Video Tenant Station

Always verify the specific option connector and terminal assignment for the tenant station being installed.

GT-RY Wiring Leads

The GT-RY includes factory leads for connection to the intercom system and controlled device.

Input Side

• White

• Blue

• Black

The black wire may remain unused in applicable GT-RY configurations.

Output Side

• Orange

• Orange

The orange leads provide the relay output connection to the compatible external device.

Always follow the current Aiphone wiring diagram for the selected application.

Entrance Light Connection

For entrance-light operation, the GT-RY interfaces with compatible GT Series entrance audio equipment such as:

GT-DB – Audio Module

The GT-RY connects to the appropriate relay/option terminals on the entrance electronics and controls the external light circuit through its output.

Aiphone notes:

One GT-RY is required for each entrance station when used for this application.

GT-DB Compatibility

The:

GT-DB – GT Series Audio Module

provides the audio and door-release functions within a modular GT entrance station.

The GT-RY can interface with the GT-DB for applications requiring entrance-light control during visitor communication.

The GT-RY does not replace the GT-DB door-release relay.

GT-RY vs. Door Release Relay

The GT-RY should not be confused with the main GT entrance door-release output.

GT-RY

Rated:

24V AC/DC, 0.5A

Used primarily for:

• External signaling

• Additional buzzer

• Entrance lighting

• Auxiliary control

GT-DB Door Release Relay

Rated:

24V AC/DC, 4A

Used primarily for:

• Electric strike control

• Magnetic lock interfaces

• Door-release applications

Use the appropriate relay according to the intended load and function.

External Device Power

The GT-RY provides a contact closure, not operating power for the external device.

The connected:

• Buzzer

• Light

• Bell

• Relay

• Signaling appliance

must have its own appropriate power source when required.

Do not exceed the GT-RY maximum contact rating of:

24V AC/DC, 0.5A

Compatible System Applications

The GT-RY is useful in applications such as:

Apartment Units

Activate an auxiliary buzzer where the resident may not hear the normal intercom tone.

Commercial Offices

Trigger an external notification device in a reception or warehouse area.

Entrance Lighting

Automatically illuminate the visitor entrance during an active intercom call.

Hearing / Notification Applications

Use the contact to interface an appropriate visual signaling device or secondary relay.

Remote Signaling

Extend incoming-call notification to another location within the tenant space.

Compact Design

The GT-RY measures only:

1-3/8" H × 2-3/16" W × 7/8" D

Its small size makes it suitable for installation inside appropriate:

• Low-voltage enclosures

• Equipment cabinets

• Junction areas

• Intercom equipment spaces

Always maintain accessibility and follow applicable electrical codes.

Current Aiphone Applications

While primarily associated with the GT Series, Aiphone also currently documents the GT-RY for selected external-signaling applications with newer equipment such as the IXG-2C7 IP video tenant station.

System-specific wiring varies, so use the appropriate Aiphone wiring diagram for the equipment being installed.

TAA Compliant

Aiphone lists the GT-RY as:

TAA Compliant

This can make it suitable for applicable government, institutional, and federally funded projects requiring TAA-compliant equipment.

Ideal Applications

• Apartment buildings

• Condominium complexes

• Multi-tenant residential buildings

• Commercial offices

• Mixed-use properties

• Senior-living facilities

• Student housing

• Reception areas

• Warehouses

• External call signaling

• Entrance-light control

• Existing GT Series upgrades

• Intercom notification expansion

Important Ordering Information

This listing is for the GT-RY relay only.

The GT-RY does not include an external:

• Buzzer

• Bell

• Light

• Strobe

• Secondary power supply

• Electric locking device

• Tenant station

• Entrance station

The option connector supplied with the applicable tenant station is required for tenant-station external-signaling applications.

Connected equipment must not exceed:

24V AC/DC, 0.5A

Use an appropriately rated secondary relay when controlling a load that exceeds the GT-RY rating.