Wall-mounted Transmitter Ajax 38184 Wired Wireless Battery CR123A

Wall-mounted Transmitter Ajax 38184 Wired Wireless Battery CR123A is a compact module that integrates a third‑party wired detector or device into the Ajax security system. The transmitter accepts signals from devices with NC/NO contacts and relays events to the Ajax hub via the Jeweller radio protocol. It provides a 3.3 V⎓ power output for a connected wired device and can operate at temperatures from −25°C to +50°C with up to 75% relative humidity. The unit is powered by a CR123A battery and has dimensions of 39 mm (width) × 22 mm (depth) × 100 mm (height).

Advantages

The Transmitter converts conventional wired detectors (IR barriers, gas detectors, liquid level sensors, alarm buttons and others) into components of the Ajax system while preserving the detector’s NC/NO wiring scheme. It supports eight distinct event types (intrusion, fire, medical help, panic, gas alarm, malfunction, leakage and custom event), ensuring correct alarm codes and user notifications reach the monitoring station and system users. The compact form factor enables installation inside a detector housing or mounting box and the built‑in accelerometer detects sabotage attempts.

Suitable for

• Connecting wired IR barriers and motion detectors to Ajax
• Integrating gas leak detectors and liquid level sensors
• Adding wired panic or alarm buttons to the security system
• Converting legacy wired sensors with NC/NO contacts for remote monitoring

Key specifications

• Model: Wall-mounted Transmitter Ajax 38184
• Power supply for connected device: 3.3 V⎓
• Battery: CR123A (device powered by battery)
• Supported contact types: NC/NO
• Supported event types: intrusion, fire, medical help, panic, gas alarm, malfunction, leakage, custom
• Radio protocol: Jeweller
• Operating temperature range: −25°C to +50°C
• Max humidity: 75%
• Dimensions (W×D×H): 39 × 22 × 100 mm
• MPN: 38184
• EAN: 4823114015489

How to use

Install the Transmitter inside the detector body or mounting box and connect the wired device using NC or NO contacts. Scan the device QR code in the Ajax mobile or desktop app to add the Transmitter to the system. In the app specify the type of connected wired device and assign the appropriate event type so the hub sends correct alarm codes and notifications. After setup the module will receive wired events and forward them to the hub via the Jeweller radio protocol.

Usage recommendations

Place the Transmitter in a dry location within the specified temperature and humidity range and secure it to avoid tampering; replace the CR123A battery according to the Ajax app notifications to ensure uninterrupted operation.