The Ajax EN54 FireProtect Heat/Sounder Jeweller is a wireless addressable heat detector with a built-in fire alarm sounder, designed for reliable fire detection and local audible alerting in professional fire safety systems.

By combining heat detection and alarm signalling in a single device, it simplifies wireless fire alarm installations, reducing the need for separate sounders and helping to minimise installation time, cabling disruption and overall system complexity. It is well suited to commercial buildings, retrofit projects and environments where traditional wired infrastructure is difficult to implement.

The detector uses dual thermistors for accurate heat sensing and supports multiple detection modes, including A1, A1R, A1S, B, BR, BS, C, CR, CS and fixed temperature operation, allowing flexible configuration to match different fire safety requirements.

As part of the Ajax EN54 wireless fire alarm range, it communicates via Jeweller technology for stable, long-range wireless connectivity and straightforward system integration. Setup and configuration are handled through the Ajax ecosystem, helping to speed up commissioning and reduce installation effort.

Its integrated sounder delivers immediate local audible alarm notification, improving occupant awareness and enhancing overall fire alarm effectiveness within the protected area.

• Wireless addressable heat detector with integrated fire alarm sounder

• Two thermistors for accurate heat detection

• Detects flaming fires and rapid temperature rise conditions

• Supports A1, A1R, A1S, B, BR, BS, C, CR, CS and fixed temperature modes

• Integrated sounder reduces need for separate alarm devices

• Ajax Jeweller wireless communication technology

• Suitable for retrofit and cable-restricted installations

• Simplified installation and app-based configuration

• Designed for compatible Ajax EN54 wireless fire alarm systems