AJX-T-MULTI

Ajax - MultiTransmitter Jeweller - White Indoor module for connecting Wired alarms to Ajax systems

Ajax - MultiTransmitter Jeweller - White Indoor module for connecting Wired alarms to Ajax systems, 18 zones for connecting devices, Sabotage-proof body, 3 Power lines, Add Backup Battery, 1927321-62-WH1

Overview:

Ajax MultiTransmitter Jeweller White Indoor Module AJX-T-MULTI
The Ajax MultiTransmitter Jeweller White is a professional integration module designed to modernise existing wired alarm systems by connecting them to an Ajax security platform. Instead of replacing a complete wired installation, this module allows businesses, homes, and security professionals to upgrade existing detectors and devices into a smart security solution managed through the Ajax app.

With support for up to 18 wired zones, secure Jeweller communication, and compatibility with multiple detector types, the Ajax MultiTransmitter provides a practical way to combine reliable wired equipment with modern wireless security management. The product part number / SKU is AJX-T-MULTI.

Description:

The Ajax MultiTransmitter Jeweller is a wired-to-wireless conversion module that connects traditional alarm devices to Ajax hubs, enabling remote control, detailed notifications, automation scenarios, and advanced security management. It supports NC, NO, and EOL connection types, allowing integration with a wide range of third-party security equipment including motion detectors, door sensors, glass break detectors, and fire alarm devices. The module includes tamper protection, backup power support, and secure encrypted communication to help maintain reliable protection in residential and commercial environments.

Features:

Upgrade Existing Wired Alarm Systems with Ajax Technology
Many older wired alarm systems are still effective but lack modern features such as smartphone control, detailed alerts, and automation. The Ajax MultiTransmitter Jeweller provides an upgrade path by allowing existing wired security devices to become part of a modern Ajax ecosystem.

Users can manage security through the Ajax mobile application, receive detailed event notifications, and configure system responses without removing existing wired equipment. This makes the MultiTransmitter a cost-effective solution for upgrading established alarm installations.

Smart Security Management Through the Ajax App
The MultiTransmitter connects wired alarms to Ajax hubs, allowing users and installers to manage connected devices remotely. Each connected zone can be individually configured with custom names, alarm types, and room locations for clearer event identification.

Notifications can provide detailed information through:

• Push notifications, SMS alerts, and monitoring station reporting
• Individual zone identification for faster response
• Multiple alarm classifications including intrusion, fire, gas, leakage, tamper, malfunction, panic, and custom service events

Connect Up to 18 Wired Security Devices
The Ajax MultiTransmitter Jeweller White supports up to 18 wired zones, making it suitable for integrating multiple security devices into a single Ajax security system.

Key connection capabilities include:

• Support for NC, NO, and EOL detector configurations
• Connection of PIR sensors, door contacts, glass break detectors, and fire sensors
• 12V power output for compatible wired devices
• Flexible integration with existing alarm equipment

Reliable Jeweller Wireless Communication
Communication between the MultiTransmitter and Ajax hub uses the secure Jeweller radio protocol. This encrypted two-way communication technology provides stable connectivity while monitoring for interference and communication issues.

The system provides:

• Encrypted communication between devices and hub
• Long-range wireless connectivity of up to 2,000 metres line-of-sight
• Automatic frequency switching during interference
• Protection against communication disruption attempts

Enhanced Protection Against Tampering and Power Loss
The Ajax MultiTransmitter is designed with professional security installations in mind. It continuously monitors connected wired devices and immediately reports issues such as cable disconnection, short circuits, or tampering attempts.

Additional protection includes:

• Two built-in tampers detecting cover opening and device removal
• Detection of connection loss with wired devices
• Space for a backup battery up to 7 Ah
• Continued operation during power interruptions with backup power support

Automation and Expanded Ajax Security Capabilities
By connecting wired equipment through the MultiTransmitter, users can expand Ajax systems with additional security and automation options. Existing wired sensors can work together with Ajax wireless devices, creating a complete smart security environment.

Automation scenarios can help systems respond automatically, such as activating lights during an alarm event, controlling connected equipment, or triggering predefined security actions.

Professional Installation and Easy Configuration
The Ajax MultiTransmitter Jeweller is designed to simplify installation for security professionals. Setup is completed through the Ajax PRO application, with QR code pairing and straightforward device configuration.

Installers benefit from:

• Remote and on-site configuration options
• Automatic identification of incorrect device connections
• Simple integration into existing Ajax systems
• Reduced installation time compared with full system replacement

Technical Highlights

• Product type: Wired-to-wireless integration module
• Model: Ajax MultiTransmitter Jeweller White
• Part number / SKU: AJX-T-MULTI
• Connection capacity: Up to 18 wired zones
• Communication protocol: Jeweller encrypted radio technology
• Wired device support: NC, NO, and EOL configurations
• Wireless range: Up to 2,000 metres line-of-sight
• Power output: 12V for connected wired devices
• Backup battery support: Up to 7 Ah
• Protection: Tamper monitoring and sabotage detection
• Application control: Ajax mobile app and PRO app configuration

Ideal Applications for Ajax MultiTransmitter Jeweller
The Ajax MultiTransmitter Jeweller White is suited for upgrading existing alarm systems in homes, offices, commercial buildings, warehouses, and professional security installations. It allows organisations to retain reliable wired devices while gaining modern wireless management, remote monitoring, and smart automation capabilities.

Specifications:

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Specifications
Product Code	AJX-T-MULTI
Compatibility
Compatible hub models	All Ajax hubs
	The Hub control panel does not support the 2EOL and 3EOL connection types. Other hub models require the OS Malevich firmware version 2.13 or higher to support such connection types.
Compatible range extenders	All Ajax radio signal range extenders
Communication with a hub or range extender
Jeweller communication technology	Proprietary wireless communication technology to transmit alarms and events.
	It features:
	Two-way communication.
	Advanced anti-sabotage.
	Block encryption featuring a dynamic key.
	Instant notifications.
	Remote configuration via the Ajax apps.
Frequency bands	866.0 - 866.5 MHz
	868.0 - 868.6 MHz
	868.7 - 869.2 MHz
	905.0 - 926.5 MHz
	915.85 - 926.5 MHz
	921.0 - 922.0 MHz
	Depends on the sales region.
Maximum effective radiated power (ERP)	up to 20 mW
Radio signal modulation	GFSK
Radio communication range	up to 2,000 m
	Between an integration module and a hub/range extender in an open space.
	Calculate radio communication range
Encrypted communication	All the data stored and transmitted are protected by block encryption with a dynamic key.
Radio frequency hopping	To prevent interception and jamming.
Wired devices connection
Number of zones	18 wired zones
	Multiple devices can be connected to one zone. The number of connected devices depends on their power consumption.
Type of connection	NC, NO, EOL
	MultiTransmitter with a firmware version lower than 2.13.
	NC, NO, EOL, 2EOL, 3EOL
	MultiTransmitter with a firmware version 2.13 and higher. The Hub control panel does not support the 2EOL and 3EOL connection types. Other hub models require the OS Malevich firmware version 2.13 or higher to support such connection types.
EOL resistance	from 1 kΩ to 7.5 kΩ with 100 Ω increment
	MultiTransmitter with a firmware version lower than 2.13. EOL resistance is measured automatically in the Ajax PRO apps.
	from 1 kΩ to 15 kΩ for each resistor, up to 30 kΩ of total resistance
	MultiTransmitter with a firmware version 2.13 and higher. Resistance is measured automatically for each EOL resistor in the Ajax PRO apps.
Cable length	up to 400 m
	When using a signal cable with a 0.22 mm² copper-clad aluminium conductor.
Operation mode	pulse, bistable
	Adjusted by a PRO or user with admin rights in the Ajax app.
Event type	9 types of events for each wired zone
	Intrusion
	Fire
	Medical help
	Panic button
	Gas alarm
	Tamper alarm
	Malfunction
	Leakage
	Custom
	Adjusted by a PRO or user with admin rights in the Ajax app.
Recommendations
Recommendations	The device is powered from the 110-240 V~ mains and designed for indoor use only.
Anti-sabotage protection
Tamper alarm	Two tampers to detect the MultiTransmitter casing opening and alert about detachment from the wall.
Protection against spoofing	with the integration module authentication
Communication loss detection	within 36 seconds
	Between a hub or range extender and MultiTransmitter. The detection time depends on the Jeweller or Jeweller/Fibra settings.
Instant detection of wired connection loss, short circuits, and malfunctions	when using EOL/2EOL/3EOL connection type
	Depends on the connection type.
Power supply
MultiTransmitter power supply	100-240 V~, 50/60 Hz
MultiTransmitter backup power supply	12 V?, up to 7 Ah capacity with a full charge cycle of up to 30 hours
	The backup battery is not included in the set.
Connected devices power supply	10.5-15 V?, up to 1 A of total maximum current consumption
	Four power lines powered by MultiTransmitter: one for fire detectors, and three for other devices.
Casing
Dimensions	192 x 238 x 100 mm
Weight	805 g
Operating temperature range	from -10degreesC to +40degreesC
Operating humidity	up to 75%
Protection class	IP40
Colours
Colours	Black
	White
Complete set
Complete set	MultiTransmitter board
	Casing
	Power cable
	Screw terminal block Adapter (only for INCERT compliance)
	12 V battery connection cable
	Installation kit
	Quick Start Guide