Ajax Transmitter Wireless Module for Third-Party Wired Detectors

Ajax Transmitter – Wireless Integration Module for Third-Party Wired Detectors

The Ajax Transmitter is a compact radio module that lets installers bring existing wired detectors and devices into a modern Ajax wireless security system. Instead of replacing perfectly functional wired sensors, the Transmitter reads their alarm and tamper signals and relays them to an Ajax hub over the encrypted Jeweller protocol, effectively turning any NC/NO contact device into a fully monitored Ajax component.

Key Features

• Universal wired compatibility: Connects almost any third-party device with an NC or NO contact output, including IR barriers, liquid level sensors, gas detectors, keypads and panic buttons.
• Jeweller radio protocol: Communicates with the hub over an encrypted 868 MHz link, resistant to signal jamming and interception.
• Long transmission range: Capable of reaching up to 1,600 metres in open, obstruction-free conditions.
• Multiple event types: Supports numerous alarm classifications such as intrusion, fire, gas leak, water leakage, panic and general malfunction, each mapped to the correct notification text and monitoring station code.
• Built-in anti-tamper accelerometer: Detects attempts to remove or open the connected device and raises an immediate tamper alert.
• Auxiliary power output: Supplies 3.3V power to the connected external detector, removing the need for a separate power source in many installations.
• KeyArm Zone support: Allows a connected wired device, such as a keypad or button, to arm, disarm or switch modes on the Ajax system.
• Battery powered: Runs on replaceable batteries, simplifying installation where mains wiring to the module itself is impractical.

Typical Use Case

The Transmitter is ideal for sites upgrading from a legacy wired alarm system to Ajax without discarding still-serviceable detectors, or for integrating specialised third-party equipment (such as gas sensors, liquid level switches or IR beams) that Ajax does not manufacture natively. It suits residential retrofits, small commercial premises and mixed-technology installations where wired and wireless devices need to coexist under one monitored platform.

What's in the Box

• Ajax Transmitter integration module
• Mounting accessories
• Batteries
• QR code registration card
• Quick start guide

Frequently Asked Questions

Can the Transmitter be used with any brand of wired detector?
It works with virtually any wired device that uses a standard NC or NO contact output, regardless of the original manufacturer.

Does it need its own hub?
No, it connects wirelessly to an existing Ajax hub via the Jeweller radio protocol and appears as a standard device in the Ajax app.

How is tamper protection handled?
An internal accelerometer detects physical interference or removal attempts and immediately reports a tamper alarm to the hub.

Additional Resources

• More info