Ajax FireProtect 2 SB White Wireless Heat & CO Fire Detector

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

The Ajax FireProtect 2 SB (Heat/CO) is a wireless, battery-powered fire detector that pairs heat sensing with a chemical carbon monoxide sensor to give early warning of both flame-based fires and dangerous CO build-up from boilers, fireplaces, and heating appliances. Finished in white to blend into most ceilings, it can run as a standalone smoke-free safety device or as part of a wider Ajax security and life-safety ecosystem, sending instant alerts to a linked hub and the Ajax mobile app.

Key Features

• Dual-hazard detection: combines external thermistors for rapid heat-rise detection with a dedicated chemical CO sensor.
• Fast temperature response: triggers an alarm when room temperature climbs sharply within a minute or crosses a fixed high-temperature threshold.
• Long-life sealed batteries (SB): non-replaceable cells rated for up to 10 years of use, matching the CO sensor's own service life.
• Loud built-in siren: an onboard alarm sounder around 85 dB ensures occupants are alerted immediately.
• Interconnected alarm network: when linked to an Ajax hub, one triggered detector can activate sirens on every other fire detector at the site within roughly 20 seconds.
• Fallback peer-to-peer alarm: on supported firmware, detectors can still warn each other directly even if hub communication drops out.
• Standalone or connected operation: works independently without a hub, or integrates into a full Ajax intrusion, video, and automation system.
• Secure two-way wireless link: communicates over the encrypted Jeweller radio protocol with tamper and signal-jamming protection.
• Simple mounting and setup: attaches to a SmartBracket base and is configured remotely through the Ajax app.

Ideal Applications

This detector suits bedrooms, living areas, hallways, and rooms near gas or oil-fired heating equipment where both fire and carbon monoxide risks are present. It is a practical retrofit option for homeowners and installers upgrading older smoke-only alarms, since no wiring is required and the device can be added to an existing Ajax hub-based security system or deployed on its own for basic protection.

What's in the Box

• FireProtect 2 SB (Heat/CO) Jeweller detector (White)
• SmartBracket mounting panel
• Installation/mounting kit
• Quick start guide

Frequently Asked Questions

Does this detector need an Ajax hub to work? No, it can operate autonomously as a standalone alarm, though pairing it with an Ajax hub unlocks app notifications and interconnected alarms with other fire detectors.

Can the batteries be replaced? The SB version uses sealed, non-replaceable batteries designed to last up to 10 years, after which the whole unit is typically replaced.

What triggers the alarm? The detector reacts to a fast rise in temperature or a high absolute temperature, as well as elevated carbon monoxide levels detected by its internal chemical sensor.

Additional Resources

• More info