Ajax FireProtect 2 AC Black Wireless Heat & Smoke Detector

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

The Ajax FireProtect 2 AC (Heat/Smoke) is a mains-powered wireless fire detector built for reliable residential and light-commercial fire safety. Combining a dual-spectrum smoke sensor with dedicated heat-sensing thermistors, it identifies both smouldering and fast-flaming fire threats while ignoring steam and cooking vapour that typically trigger false alarms. Wired into 110-240V AC power with a built-in backup battery, it stays online through blackouts and communicates with an Ajax hub over the long-range, encrypted Jeweller radio protocol.

Key Features

• Dual-spectrum optical smoke sensor: Uses blue and infrared LEDs with Ajax's HazeFlow 2 algorithm to distinguish real smoke from steam or dust.
• Dual Class A1R thermistors: Mounted outside the enclosure for a faster response to rapid temperature rises, including smouldering synthetic materials.
• Mains powered with battery backup: Runs on 110-240V~ AC (up to 2W draw) with a built-in lithium backup cell for uninterrupted protection during power cuts.
• Loud 85 dB onboard siren: Delivers distinct tones for smoke, heat, and fault conditions so occupants can react appropriately.
• Dual interconnection system: Primary alerts route through the Ajax hub in around 20 seconds, while a fallback detector-to-detector link raises the alarm within 60 seconds even if hub connectivity drops.
• Long-range Jeweller connectivity: Communicates with a compatible Ajax hub at distances of up to 1,700 m in open conditions.
• Dust and insect-resistant chamber: Sealed smoke chamber design maintains detection accuracy without regular cleaning.
• Fast, tidy installation: SmartBracket mounting panel with pre-fitted WAGO 221 connectors allows setup in around 90 seconds without opening the enclosure.
• Hub-free operation: Can function as a standalone smoke/heat alarm even without being paired to an Ajax security system.

Reliable Fire Detection for Homes and Small Businesses

Designed for ceiling installation in living areas, bedrooms, hallways, and offices, the FireProtect 2 AC (Heat/Smoke) suits homeowners and integrators who want a discreet, always-powered detector that ties into a broader Ajax security and life-safety ecosystem. Its black finish blends into modern interiors, while automation compatibility means an alarm can trigger connected Ajax devices, such as switching off ventilation or activating emergency lighting, the moment a threat is confirmed.

What's in the Box

• FireProtect 2 AC (Heat/Smoke) detector, black
• SmartBracket mounting panel
• WAGO 221 3-conductor terminal connectors x2 (pre-installed)
• Installation kit and mounting hardware
• Quick start guide

Frequently Asked Questions

Does this detector need an Ajax hub to work?
No. It can operate independently as a standalone alarm, but pairing with an Ajax hub unlocks remote monitoring, app alerts, and automation scenarios.

What happens if mains power is lost?
The built-in backup battery keeps the detector powered and fully functional during outages.

Can multiple detectors alert each other?
Yes. FireProtect 2 AC units support interconnected alarms, sounding all linked detectors within roughly a minute of a threat being detected.

Additional Resources

• More info