Build a customized Aiphone GT Series entrance station with the Aiphone GT-DB Audio Module.

The GT-DB provides the audio communication and door-release functions for compatible modular GT Series entrance stations. It installs behind the GT-DBP vandal-resistant cover panel and integrates with call-button, directory, keypad, and optional video modules to create a complete multi-tenant entrance system.

The GT-DB includes a Form C dry-contact door-release relay rated up to 24V AC/DC, 4A, making it suitable for interfacing compatible electric strikes, magnetic locks, relays, and access-control equipment.

Key Features

• Genuine Aiphone GT-DB

• Audio module for modular GT Series entrance stations

• Provides hands-free visitor audio communication

• Integrated door-release control

• Form C dry-contact relay

• Door-release contact rated 24V AC/DC, 4A

• Door-release timer functionality

• System-powered operation

• Uses simple 2-conductor non-shielded wiring

• Designed for GT-DBP cover panel

• Compatible with direct-select call-button systems

• Compatible with digital directory and keypad configurations

• Can be combined with GT-VB for video entrance applications

• Fire-resistant ABS construction

• Ideal for multi-tenant commercial and residential entrances

Product Specifications

Manufacturer: Aiphone
Model: GT-DB
Series: GT Series
Product Type: Entrance Station Audio Module
Communication: Hands-Free Audio
Power Source: Supplied by GT System
Door Release Contact: Form C Dry Contact
Door Release Rating: 24V AC/DC, 4A
Door Release Timer: Yes
Wire Type: 2-Conductor, Solid, Non-Shielded, PE Insulated
Recommended Wire: Aiphone #872002 Series
Material: Fire-Resistant ABS Plastic
Height: 3-11/16"
Width: 4-1/4"
Depth: 1-1/2"
Application: GT Series Modular Entrance Stations

Audio Communication Module

The GT-DB provides the primary audio electronics for a modular GT Series entrance station.

Its functions include:

• Visitor-to-tenant audio communication

• Entrance-station speaker operation

• Entrance-station microphone operation

• System communication signaling

• Door-release control

The module is installed behind the exterior GT-DBP panel and connects to the other required GT Series entrance components.

GT-DBP Cover Panel Required

For a complete modular installation, pair the GT-DB with the:

GT-DBP – Audio Module Cover Panel

The GT-DBP is the vandal-resistant zinc die-cast exterior panel that covers and protects the GT-DB.

Important

GT-DB = Internal audio/electronic module
GT-DBP = Exterior vandal-resistant cover panel

Both components are required for a typical custom modular entrance station.

Door Release Relay

The GT-DB includes an integrated Form C dry-contact relay.

Contact rating:

24V AC/DC, 4A Maximum

Form C contacts provide:

• Normally Open

• Normally Closed

• Common

This provides flexibility for controlling compatible:

• Electric strikes

• Magnetic locks

• Auxiliary relays

• Gate operators

• Access-control interfaces

Always verify the voltage and current requirements of the connected locking hardware.

Door Release Timer

The GT-DB includes timer functionality for the door-release output.

This allows the entrance station to control how long the door-release relay remains activated after a tenant initiates door release.

Configure the timer according to the applicable GT Series installation and programming instructions.

Modular GT Series Entrance Stations

The GT-DB is designed as one component within Aiphone's modular GT Series entrance architecture.

A custom entrance station can combine:

• GT-DB – Audio Module

• GT-DBP – Audio Module Panel

• GT-VB – Camera Module

• GT-VP – Camera Module Panel

• GT-SW – Direct-Select Call Switch Module

• GF-1P / GF-2P / GF-3P / GF-4P – Call Button Panels

• GT-NSB – Digital Display Module

• GT-NSP-L – Display Panel

• GT-10K – 10-Key Keypad

• GF-10KP – Keypad Panel

• GF-BP – Blank Filler Panel

This modular approach allows the entrance station to be built specifically for the number of tenants and functions required.

Direct-Select Entrance Configuration

For a direct-select button entrance, a typical configuration may include:

• GT-DB – Audio Module

• GT-DBP – Audio Panel

• GT-SW – 4-Call Switch Module

• Appropriate GF-1P, GF-2P, GF-3P, or GF-4P panel

Additional GT-SW modules can be added when more direct-select tenant buttons are required.

Video Entrance Configuration

For video visitor identification, add:

• GT-VB – Camera Module

• GT-VP – Camera Module Panel

The GT-DB continues to provide the audio communication and door-release functions while the GT-VB handles video.

Digital Directory Configuration

For larger multi-tenant properties, the GT-DB can be combined with:

• GT-NSB – Digital Display / Directory Module

• GT-NSP-L – Display Panel

• GT-10K – 10-Key Keypad

• GF-10KP – Keypad Cover Panel

This allows visitors to search for tenants and initiate calls without requiring individual physical call buttons for every resident.

Compatible Front Frames

The GT-DB and GT-DBP occupy one standard GT modular position and can be installed in compatible frames including:

• GF-2F – 2-Module Front Frame

• GF-3F – 3-Module Front Frame

• GT-4F – 4-Module Front Frame

Choose the frame according to the number of modules required for the entrance station.

Compatible Back Boxes

Flush-mount installations use corresponding back boxes such as:

• GF-2B – 2-Module Back Box

• GF-3B – 3-Module Back Box

• GT-4B – 4-Module Back Box

Appropriate GT Series hooded surface-mount boxes are also available when flush installation is not practical.

Complete Entrance Panel Kits

The GT-DB is also included as a core component in several factory-configured Aiphone entrance panel kits.

Examples include configurations containing:

• GT-DB audio module

• GT-VB video module

• GT-NSB digital directory

• GT-10K keypad

• Compatible frames and back boxes

These kits provide a convenient alternative to selecting each modular component individually.

Recommended Wiring

The GT-DB uses:

2-Conductor, Solid, Non-Shielded, PE-Insulated Cable

Recommended Aiphone wire includes:

• 87200250C – 20 AWG | 2-Conductor | 500'

• 87200210C – 20 AWG | 2-Conductor | 1,000'

• 872002P10C – 20 AWG | 2-Conductor | Plenum | 1,000'

Always follow the current GT Series system wiring diagram when determining cable routing and maximum distances.

System Power

The GT-DB is powered by the GT Series system and does not require a separate local power supply at the module.

Typical GT Series system equipment can include:

• GT-BC – Audio Bus Control Unit

• PS-2420UL – 24VDC Power Supply

• GT Series distribution and control equipment

Power-supply quantity depends on the overall system size and configuration.

Fire-Resistant ABS Construction

The internal GT-DB housing is constructed from fire-resistant ABS plastic.

The module is protected on the exterior of the entrance station by the separately purchased GT-DBP zinc die-cast panel.

Ideal Applications

• Apartment buildings

• Condominium complexes

• Multi-tenant residential properties

• Commercial office buildings

• Mixed-use developments

• Student housing

• Senior-living properties

• Controlled-access buildings

• Modular audio intercom entrances

• Modular video intercom entrances

• Existing GT Series repairs and expansions

Important Ordering Information

This listing is for the GT-DB audio module only.

The GT-DBP exterior cover panel is sold separately and is required for a typical modular entrance installation.

Other components sold separately may include:

• GT-DBP audio panel

• Front frame

• Back box

• GT-SW call switch module

• Call-button panel

• GT-VB camera module

• GT-VP camera panel

• Digital directory

• Keypad

• GT-BC bus controller

• PS-2420UL power supply

• Intercom wiring

• Electric locking hardware

Verify the complete entrance-station configuration before ordering.