Ajax EN54 FireProtect (Smoke/Sounder) WH – Wireless Smoke Detector with Sounder, Jeweller, up to 1700 m

The Ajax EN54 FireProtect (Smoke/Sounder) WH is a wireless addressable point smoke detector with a built-in fire alarm sounder in white, certified to EN 54 requirements. The device combines smoke detection and immediate audible alarm notification in a single unit – with no external power supply or separate sounder required. It communicates with the control and indicating equipment (CIE) via the secure, encrypted Jeweller radio protocol with a range of up to 1,700 m in open space and is designed for indoor use only.

Key features

• Detection type: Dual-spectrum optical smoke sensor (blue and infrared LEDs) with a patented smoke chamber protected against dust, dirt, and insects
• HazeFlow 2 algorithm: Advanced software algorithm distinguishing smoke from vapour or steam to minimise false alarms
• Built-in sounder: Up to 85 dB (at 1 m distance), 32 selectable tone patterns, adjustable via the Ajax app
• Alarm synchronisation: Audible alerts are automatically synchronised across all devices with a sounder connected to the same CIE
• Communication protocol: Ajax Jeweller – two-way encrypted wireless communication, range up to 1,700 m in open space
• Power supply: 2 × CR123A batteries (pre-installed), no external power required; battery life up to 5 years
• Tamper protection: Two tamper buttons – one detects removal from the SmartBracket mounting panel, the other detects removal of the smoke chamber lid
• Mounting: SmartBracket panel – allows rotation of up to 90° even after installation; optional lock prevents removal without a special tool
• Indicators: Three LED indicators (green, yellow, red)
• Operation: Always active 24/7, regardless of system security mode; supports fire alarm scenarios and Coincidence detection feature
• Certification: EN 54 (RED, RoHS, LVD, EMC); compliant with EN 54-3 for audible alarm temporal pattern
• Environment: Indoor use only
• Colour: White (WH)

Suitable for office buildings, hotels, educational facilities, industrial sites, and any location requiring a local evacuation signal immediately upon smoke detection – without a separate sounder in the same area.