Provide video visitor identification, hands-free communication, and remote entrance control with the Aiphone GT-1M3 3.5-Inch Video Tenant Station.

Designed for Aiphone GT Series multi-tenant video intercom systems, the GT-1M3 combines a compact 3.5" color LCD display with hands-free VOX or push-to-talk communication, digital pan/tilt/zoom, door release, security guard calling, and auxiliary device control.

The GT-1M3 is also supported on compatible GH Series systems, making it an excellent current replacement option for select discontinued Aiphone video tenant stations.

Key Features

• Genuine Aiphone GT-1M3

• 3.5" TFT color LCD display

• Current GT Series video tenant station

• Compatible with GT Series

• Compatible with supported GH Series

• Hands-free VOX communication

• Push-to-talk communication

• Digital Pan / Tilt / Zoom

• Wide and zoom image viewing

• Adjustable LCD brightness

• Image adjustment for difficult lighting conditions

• Adjustable communication volume

• Adjustable call-tone volume

• Dedicated door-release button

• Concierge / security guard call

• Option button for compatible external devices

• Supports external call signaling with GT-RY

• Supports compatible automatic-entry / doctor-call function

• 24VDC system-powered operation

• Surface wall mounting

• Optional desk mounting with MCW-S/B

Product Specifications

Manufacturer: Aiphone
Model: GT-1M3
Series: GT Series
Product Type: Video Tenant Station
Display: 3.5" TFT Color LCD
Communication: Hands-Free VOX or Push-to-Talk
Power Source: 24VDC
Power Supply: Supplied Through GT-BC / GT-VBC System
Door Release: Yes
Guard / Concierge Call: Yes
Digital Pan / Tilt / Zoom: Yes
Option Output: Yes
Call Notification Output: Yes
Automatic Entry / Doctor Call: Supported
Audio Wire: Aiphone #872002 Series
Video Wire: Aiphone #871802 Series
Mounting: Surface 3-Gang Wall Box or Optional Desk Stand
Operating Temperature: 32°F to 104°F (0°C to 40°C)
Material: Plastic
Color: White
Height: 7-1/16"
Width: 4-15/16"
Depth: 1"
Approximate Weight: 0.71 lb / 320g

3.5-Inch Color Display

The GT-1M3 features a compact 3.5" TFT color LCD monitor that automatically displays entrance video when a visitor calls from a compatible GT Series video entrance station.

The resident can:

• View the visitor

• Adjust the image

• Zoom the camera view

• Communicate with the visitor

• Release the entrance door

The compact screen and narrow station profile make the GT-1M3 ideal where wall space is limited.

Digital Pan / Tilt / Zoom

When used with a compatible GT Series entrance camera, the GT-1M3 provides digital image controls.

Available functions include:

• Wide view

• Zoom view

• Digital pan

• Digital tilt

This allows the tenant to electronically reposition the displayed camera image for improved visitor identification.

Hands-Free VOX Communication

Press the TALK/OFF button to answer an entrance call.

The GT-1M3 normally operates using hands-free automatic voice actuation, allowing natural conversation without holding a handset.

The system automatically switches between transmit and receive according to voice activity.

Push-to-Talk Communication

In areas with significant background noise, the GT-1M3 can also operate in push-to-talk mode.

Holding the TALK button allows the tenant to control audio transmission manually.

This can improve communication in:

• Busy offices

• Apartments with high background noise

• Commercial buildings

• Maintenance areas

• Other noisy environments

Door Release

The GT-1M3 includes a dedicated door-release button.

During communication with a compatible entrance station, pressing the door-release button activates the associated GT Series door-release circuit.

Door locking hardware and required entrance relays are sold separately.

Security Guard / Concierge Call

The GT-1M3 includes a dedicated button for contacting a compatible security guard or concierge station.

Current GT Series equipment includes:

GT-MKB-N – Video Security Guard Station with NFC Reader

This allows residents to contact building staff without first receiving an entrance call.

Actual functions depend on the system configuration and programming.

Adjustable Communication Volume

A dedicated volume control allows the tenant to adjust communication audio.

The communication volume can be adjusted approximately from:

0–10

This helps optimize audio for different room environments.

Adjustable Call-Tone Volume

Incoming-call volume can also be independently adjusted.

The call tone can be:

• Increased

• Reduced

• Muted

When the chime is muted, the station's status indicator provides a visual reminder.

LCD Brightness Control

The GT-1M3 includes a dedicated LCD brightness control.

Brightness can be adjusted approximately from:

0–10

This allows the display to be optimized for different indoor lighting conditions.

Image Adjustment

The ADJUST button can compensate for challenging entrance lighting.

This feature is useful when a visitor is:

• Backlit by bright sunlight

• Standing near a bright exterior opening

• Located in a darker entrance area

The feature helps improve the displayed visitor image without requiring manual adjustment of the entrance camera.

Option Button

The GT-1M3 includes an OPTION button that can operate compatible external equipment.

The option contact output is rated up to:

24V AC/DC, 1A Maximum

Compatible applications can include:

• Exterior lighting

• Auxiliary relay

• Gate interface

• Elevator control interface

• Other low-voltage devices

Aiphone specifies a minimum compatible load of approximately:

5VDC, 100mA

Additional interface equipment may be required depending on the connected device.

External Call Signaling

The GT-1M3 supports external call notification using the:

GT-RY – External Signaling / Option Relay

This can be used to activate compatible external notification equipment such as:

• Buzzer

• Bell

• Auxiliary sounder

• Visual signaling interface

This is useful where the tenant may not hear the normal station call tone.

Automatic Entry / Doctor Call

The GT-1M3 includes option wiring for Aiphone's doctor-call / automatic-entry function.

When properly configured, this function can automatically activate door release when the tenant station receives an entrance call.

This function is intended for specific building applications and should only be enabled according to Aiphone's installation and system-design instructions.

GT Series Compatibility

The GT-1M3 is a current tenant station for the Aiphone GT Series.

It can operate with compatible system equipment including:

• GT-BC audio bus controller

• GT-VBC video bus controller

• GT-4Z video distribution adaptor

• Modular GT entrance stations

• GT-DMB-N entrance stations

• GT-MKB-N guard stations

GH Series Compatibility

Aiphone also currently identifies the GT-1M3 as compatible with supported GH Series systems.

This makes it useful for replacing certain discontinued GH video tenant stations without necessarily replacing the entire building intercom system.

Always verify the existing system configuration before ordering a replacement station.

Replaces Legacy Tenant Stations

Aiphone's current compatibility documentation identifies the GT-1M3 as the replacement for:

GT-1M-L

Legacy GT Series video tenant station.

GH-1KD

Legacy GH Series video tenant station.

System wiring and installation requirements should still be verified before replacement.

Recommended Audio Wiring

The GT-1M3 uses:

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

for the audio/data bus.

Recommended Aiphone wire:

• 87200250C – 20 AWG | 500'

• 87200210C – 20 AWG | 1,000'

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

Recommended Video Wiring

The video bus uses:

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

Recommended Aiphone wire:

• 87180250C – 18 AWG | 500'

• 87180210C – 18 AWG | 1,000'

• 871802P10C – 18 AWG | Plenum | 1,000'

Audio and video should be installed using the applicable separate cable runs specified by Aiphone.

Wiring Distance

Current Aiphone GT Series wiring guidance allows up to approximately:

980 ft from the distribution point to a tenant station

when the appropriate approved conductor size and system configuration are used.

Maximum cumulative wiring distance can be as much as:

8,200 ft

for applicable 20 or 18 AWG GT Series trunk wiring.

Actual allowable distance depends on the complete system layout.

24VDC System Power

The GT-1M3 operates on:

24VDC

Aiphone specifies that power is supplied through compatible:

• GT-BC – Audio Bus Control Unit

• GT-VBC – Video Bus Control Unit

A separate dedicated power supply is not normally required directly at the GT-1M3.

Loop or Home-Run Wiring

The GT-1M3 supports GT Series system wiring architectures including:

Loop Wiring

Stations can be connected along the applicable tenant bus with the final station properly terminated.

Home-Run Wiring

Tenant stations can be distributed using:

GT-4Z – 4-Way Video Distribution Adaptor

This provides centralized tenant branch connections from the building equipment location.

Termination Setting

The GT-1M3 includes a termination selector for proper GT video-bus operation.

The final tenant station on an applicable video branch must be configured according to the Aiphone wiring diagram.

Incorrect termination can affect video performance.

Wall Mounting

The GT-1M3 is designed for surface mounting over a:

3-Gang Electrical Box

The station measures only 1" deep, providing a low-profile installation on the tenant's wall.

Optional Desk Mounting

For desktop or countertop installation, use:

MCW-S/B – Adjustable Desk Stand

The stand provides approximately:

• 45° position

• 60° position

This is useful in reception areas, offices, security desks, or other locations where wall mounting is not desirable.

Compatible GT Series Equipment

Common related equipment includes:

• GT-BC – Audio Bus Control Unit

• GT-VBC – Video Bus Control Unit

• GT-4Z – 4-Way Video Distribution Adaptor

• GTW-DP – Audio Distribution Point Terminal Strip

• GT-MKB-N – Video Security Guard Station

• GT-RY – External Signaling Relay

• MCW-S/B – Adjustable Desk Stand

• PS-2420UL – 24VDC System Power Supply

Required equipment depends on the complete GT Series system configuration.

Ideal Applications

• Apartment buildings

• Condominium complexes

• Multi-tenant residential properties

• Commercial office buildings

• Mixed-use developments

• Student housing

• Senior-living properties

• Controlled-access buildings

• Existing GT Series installations

• Compatible GH Series upgrades

• Replacement for GT-1M-L

• Replacement for GH-1KD

Important Ordering Information

This listing is for the GT-1M3 Video Tenant Station only.

The following are sold separately unless specifically stated:

• GT Series entrance station

• GT-BC audio bus controller

• GT-VBC video bus controller

• GT-4Z distribution adaptor

• GT-MKB-N guard station

• GT-RY signaling relay

• MCW-S/B desk stand

• System power supply

• Audio wiring

• Video wiring

• Electric locking hardware

• Other GT Series equipment

The GT-1M3 is currently supported on compatible GT and GH Series systems but is not compatible with legacy GF Series architecture.

Verify the existing system before ordering replacement equipment.