Ajax FireProtect 2 SB Black Wireless Heat, Smoke & CO Detector

Ajax FireProtect 2 SB (Heat/Smoke/CO) Black Wireless Fire Detector

The Ajax FireProtect 2 SB in black is a battery-powered wireless fire detector that combines smoke, heat, and carbon monoxide detection in a single compact housing. Designed for indoor use in homes and small commercial spaces, it pairs a dual-spectrum optical smoke sensor, two external heat thermistors, and a chemical CO sensor to catch fires early while filtering out everyday false triggers like steam or cooking vapour. Sealed for a 10-year service life, this SB variant requires no battery swaps and communicates wirelessly with an Ajax hub over long range, while also being able to operate as a fully standalone alarm.

Key Features

• Triple threat detection: Monitors smoke, rapid temperature rise, and dangerous carbon monoxide levels from one device.
• Dust and insect-resistant smoke chamber: Uses blue and infrared LEDs with a smart algorithm to distinguish real smoke from water vapour, reducing nuisance alarms.
• Dual external thermistors: Positioned outside the enclosure for a faster response to sudden heat spikes or smouldering fires.
• Sealed 10-year batteries: Non-replaceable lithium cells power both the detector and the CO sensor for a full decade with no maintenance swaps.
• Loud built-in siren: An 85 dB alarm ensures the warning is heard throughout the room.
• Dual interconnection modes: Alerts other on-site fire detectors via the hub within 20 seconds, with a direct fallback link if hub communication is lost.
• Long-range wireless link: Connects to the hub over the encrypted Jeweller radio protocol at distances up to 1,700 m in open space.
• Self-monitoring: Continuously checks battery health and sensor condition, sending early low-battery and fault notifications to the Ajax app.
• Tool-free installation: The SmartBracket mounting panel and in-app setup allow quick placement and repositioning without opening the enclosure.

Ideal for Homes and Small Business Spaces

This detector suits bedrooms, living areas, home offices, and utility rooms where residents want combined fire and carbon monoxide protection without running new wiring. Because it can function independently of an Ajax hub or as part of a broader Ajax security ecosystem, it's a flexible option for both standalone fire safety and integrated smart home or commercial alarm setups where instant push notifications and interconnected sirens add an extra layer of protection.

What's in the Box

• FireProtect 2 SB (Heat/Smoke/CO) detector, Black
• SmartBracket mounting panel
• Mounting screws and hardware
• Quick start guide

Frequently Asked Questions

Does this detector need a hub to work?
No, it can operate as a standalone alarm, though connecting it to an Ajax hub unlocks interconnected alerts, remote monitoring, and app notifications.

Can the batteries be replaced?
No. The SB version uses sealed, non-replaceable lithium batteries rated for roughly 10 years; once depleted, the unit is replaced rather than re-batteried.

Is this detector suitable for outdoor installation?
No, it is designed strictly for indoor use and should not be mounted outdoors or in damp, exposed locations.

Additional Resources

• More info