Ajax FireProtect 2 SB/HS wireless smoke and heat detector Jeweller autonomous 85 dB siren 1700 m radio range SmartBracket mount white

Ajax FireProtect 2 SB/HS (52254) is a wireless smoke and heat detector with a built-in 85 dB siren and autonomous operation, designed for early fire detection in indoor residential and commercial premises. The device uses the secure Jeweller two-way radio protocol with a range of up to 1700 m and provides real-time alarm notifications within the Ajax security system or autonomously.

Key Advantages

• Smoke and heat sensors in one device → fast fire detection triggered by smoke or temperature rise

• Jeweller two-way radio communication → secure and stable alarm transmission to a hub or repeater

• Built-in 85 dB siren → powerful audible alert for fire threats

• Autonomous battery-powered version (SB) → long-term operation without mains power (up to approximately 10 years)

• SmartBracket mounting → simple and secure ceiling or wall installation

• LED status indicators → clear visual feedback on device status

• App notifications (with Hub) → receive alarms and status updates on a mobile device

• Radio range up to ~1700 m in open space → wide coverage area with a hub

Technical Specifications

• Type → wireless smoke and heat detector (fire safety sensor)

• Model → FireProtect 2 SB/HS (52254)

• Sensors → optical smoke sensor and thermal sensors

• Radio protocol → Jeweller (secure two-way communication)

• Radio frequency → region-dependent (e.g. 868 MHz and similar bands)

• Radio range → up to 1700 m in open space

• Siren → 85 dB sound level (approximately at 3 m distance)

• Power supply → SB (sealed batteries, not user-replaceable)

• Battery life → up to approximately 10 years (power-optimized technology)

• LED indication → status, alarm and fault indicators

• Mounting → SmartBracket (ceiling or wall mounting)

• Operating temperature → approximately 0 °C to +50 °C

• Dimensions → approximately 86 × 86 × 44 mm

• Weight → approximately ~145–270 g (depending on battery configuration)

• Color → white

Compatibility

• Communicates with Ajax Hub, Hub 2, Hub 2 Plus — provides alarm and status notifications to mobile devices

• Can operate autonomously — activates siren and LED indicators without a hub

• Not intended for outdoor use or for environments with high humidity or contamination

How to Use

• Installation: mount the detector on the ceiling or wall using the SmartBracket mount

• Connection: add the device to the Ajax hub via the app

• Testing: use the Test/Mute button or in-app testing

• Alarm handling: the detector automatically activates the siren and sends notifications when smoke or rapid temperature rise is detected

• Status indication: LED signals indicate normal operation, faults or alarms

Why Choose This Product
Ajax FireProtect 2 SB/HS delivers high reliability in fire detection through the combination of smoke and heat sensors and secure Jeweller radio communication with a long operating range. The built-in siren, autonomous operation and easy installation make it an effective solution for residential and office fire safety systems.

Real-World Usage Scenarios

• Residential house — fast detection of smoke and temperature changes

• Apartment — alerts for fire-hazard situations

• Office premises — fire safety monitoring with automated notifications

• Small shop or public space — additional fire detector within a security system

• Sleeping areas — 24/7 alarm signaling to protect occupants

Package Contents

• Ajax FireProtect 2 SB/HS (52254) wireless smoke and heat detector

• SmartBracket mounting base

• Installation accessories and user manual

About the Brand
Ajax Systems is a leading manufacturer of wireless security systems, focusing on reliable fire safety and alarm solutions with secure radio communication, intuitive app control and broad ecosystem integration.