The Ajax FireProtect 2 RB is a next-generation wireless fire detector that combines smoke, heat, and carbon monoxide detection in a single device — with the same encrypted Jeweller wireless communication and Ajax Hub integration as every other device in your security system.
One device. Three threats detected. Managed from the same Ajax app, on the same monitoring plan, with the same instant push alerts as your intrusion system.
What It Detects
Three Threats. One Device.
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Smoke
Dual-spectrum optical sensor detects smoke particles — distinguishes real smoke from steam and vapor
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Heat
Two external Class A1R thermistors react instantly to rapid temperature rise from burning synthetics
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Carbon Monoxide
CO sensor alerts before concentration reaches dangerous levels — the silent threat you can't see or smell
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HazeFlow 2 — Ajax's Anti-False-Alarm Algorithm
FireProtect 2 uses HazeFlow 2, Ajax's proprietary smoke detection algorithm that simultaneously analyzes data from both the blue and infrared LEDs in the dual-spectrum sensor. It distinguishes real smoke from steam, cooking vapor, and humidity — so you get fewer false alarms and faster real ones. The dustproof smoke chamber is also maintenance-free — no regular cleaning required.
Features
Built for Reliability
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Dual-Spectrum Smoke DetectionBlue + infrared LEDs identify smoke particle size — ignores vapor and steam
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Dual Class A1R ThermistorsExternal thermistors eliminate detection delays — catch fast-rising heat instantly
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Carbon Monoxide SensorAlerts at 50 ppm — well before concentration becomes life-threatening
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Built-In 85dB SirenAudible local alarm activates instantly — no hub required for standalone operation
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Jeweller WirelessEncrypted communication with your Ajax Hub — up to 5,577 ft range in open space
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Tamper ProtectionInstant alert if the device is removed from its mounting panel
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Ajax App IntegrationReal-time push alerts with initiating detector location, alarm type, and exact time
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Self-Testing SystemAutomatically diagnoses sensors and reports health to hub — testable via app anytime
7yr
Battery Life
85dB
Built-In Siren
50ppm
CO Alert Level
3-in-1
Detection
💨 Why CO Detection Matters
Carbon monoxide is colorless, odorless, and undetectable without a sensor. The FireProtect 2 alerts at 50 ppm — before the first signs of poisoning occur. At 300 ppm, the alarm triggers within 3 minutes. CO concentration of 400 ppm sustained over 3 hours can be life-threatening. This is the detector that catches it before that happens.
Use Cases
Ideal For
🏠 Bedrooms & living areas
🔥 Kitchen adjacent rooms
🚗 Garage & utility rooms
💨 Homes with gas appliances
⚡ Ajax ecosystem expansion
Available Colors
Two Finishes
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Why Ajax Systems?
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