Introduction to Ajax FireProtect 2 RB (Heat) and its key features
Ajax FireProtect 2 RB (Heat)is a wireless, ceiling-mounted heat-only detector engineered for residential and light-commercial environments where reliable heat sensing and fast, local alarm signaling are essential. The RB variant uses replaceable CR123A batteries (two pre-installed) and connects securely to Ajax Hubs via the Jeweller two-way radio protocol. It combines absolute high-temperature detection, rapid temperature-rise sensing, a built-in piezo siren rated up to 85 dB, tamper detection and quick interconnect capability so that an alarm can be propagated across the system. With an open-space radio range measured in hundreds to thousands of metres (region- and environment-dependent) and a battery life designed to last several years, FireProtect 2 RB aims to deliver dependable protection with low maintenance.
Detailed description: specifications and benefits
The FireProtect 2 RB focuses on heat detection rather than smoke sensing, making it particularly suitable for spaces where smoke detectors may produce false alarms (for example kitchens, garages or dusty workshops) but where early detection of dangerous temperature rise or very high temperatures is still critical.
- Model:Ajax FireProtect 2 RB (Heat)
- SKU:ITM005251
- Detection mode:Class A1R heat — responds to absolute high temperature (~64°C / ~147°F) and to rapid temperature rise
- Batteries:2 × CR123A (replaceable, pre‑installed)
- Battery life:Approximately 5–7 years depending on polling and alarm settings
- Siren:Built-in piezo siren up to 85 dB (measured at ~3 m / ~10 ft)
- Radio / Protocol:Jeweller two-way encrypted GFSK radio; frequency-hopping, automatic power control
- Radio range:Up to ~1.7 km open space (actual range varies by region and environment)
- Dimensions & weight:≈43 mm height × ≈86 mm diameter; ≈146 g
- Operating conditions:0–50°C, up to 80% RH non‑condensing
- Ingress protection:IP20 — intended for indoor use
- Mounting:Ceiling mount using SmartBracket
- Tamper:Tamper detection for removal or bracket detachment
- Compliance:CE and regional approvals; UL/ULC variants may be available depending on part number and region
- Reliable heat detection:Class A1R sensors focus on high temperature and rapid rises, making the unit effective at identifying real fire-related heating events while reducing nuisance alarms in smoky or dusty environments.
- Wireless convenience:Secure two-way Jeweller communication offers robust connectivity to Ajax Hubs and long-range performance where line-of-sight permit, enabling monitored, integrated alarm systems without new wiring.
- Low maintenance:Long battery life (5–7 years typical) with replaceable CR123A cells keeps upkeep simple; local test button allows quick functional checks.
- Local audible alert:Built-in siren provides immediate loud notification up to 85 dB to wake occupants and draw attention to an event even if central monitoring is delayed.
- Tamper protection:Prevents undetected removal and helps maintain system integrity.
Use cases and scenarios where FireProtect 2 RB excels
The heat-only design of FireProtect 2 RB makes it particularly useful in locations and applications where smoke detectors are prone to false alarms or where heat detection is the preferred strategy. Typical scenarios include:
In home kitchens or communal cooking areas in light-commercial premises, smoke and steam from normal cooking can cause nuisance triggers on optical smoke detectors. A heat-only detector like FireProtect 2 RB detects rapid rises in temperature or an absolute high temperature, reducing false alarms while still providing critical early warning of a real fire.
Garages, workshops and boiler rooms often contain dust, fumes or small amounts of smoke during normal operation. Heat detectors are more suited for these environments because they focus on temperature rather than airborne particles.
Spaces with limited ventilation where heat can build quickly—such as attics or storage areas—benefit from the high-temp threshold and rapid-rise detection that FireProtect 2 RB provides.
Where hardwired commercial fire systems are impractical or costly to install, FireProtect 2 RB paired with an Ajax Hub creates a monitored solution with remote notifications, system logging and interconnect functionality. Installers and property owners can expand coverage without running new cabling.
Comparisons with similar products on the market
Heat-only detectors are a distinct category compared with smoke-only or combined multi-sensor alarms. When evaluating the FireProtect 2 RB alongside alternatives, consider these factors:
Smoke detectors (photoelectric or ionization) are designed to detect combustion products and typically provide the earliest warning for smouldering or smouldering fires. Multi-sensor devices combine smoke, heat and sometimes CO sensing for broader coverage. FireProtect 2 RB is specialized: it excels where smoke detectors would false-trigger (kitchens, garages) but should be used as part of an overall protection strategy—often alongside smoke detectors in inhabited areas—to ensure detection of smouldering fires where smoke is the primary early indicator.
Ajax uses the Jeweller encrypted two-way protocol known for secure, low-latency communication and adaptive power control. Competing wireless detectors may use Wi‑Fi, Zigbee, Z-Wave or proprietary RF. Compared with Wi‑Fi devices, a dedicated alarm protocol like Jeweller often offers better battery life and range, and less interference from home network traffic. When selecting a wireless detector, also consider the wider ecosystem: Ajax Hubs provide centralized management, app-based alerts and integration with other Ajax devices; other brands offer similar hubs or rely on cloud services and third-party integrations.
Many consumer-focused detectors use non-replaceable sealed batteries to simplify maintenance; FireProtect 2 RB uses replaceable CR123A cells, which can be an advantage where long-term replaceability and availability of specific cells is desired. The SmartBracket mounting simplifies ceiling installation and tamper protection.
Customer feedback and representative reviews
Below are representative snippets reflecting common themes from installers and end users who choose heat detectors like the Ajax FireProtect 2 RB. These are typical sentiments observed in market feedback for similar devices and help illustrate what to expect.
- “Great for the kitchen”—Many homeowners appreciate fewer nuisance alarms compared with smoke detectors in cooking areas while maintaining a strong local alarm when temperatures climb.
- “Easy integration and long battery life”—Installers report reliable pairing with Ajax Hubs and long intervals between battery changes, reducing service visits.
- “Loud and clear local alarms”—The 85 dB siren is regularly cited as loud enough to wake sleeping occupants and alert neighbours in attached properties.
- “Robust build and tamper features”—Users like the tamper detection and secure mounting bracket, which helps prevent accidental or malicious removal.
Note: For verified customer reviews and hands-on reports, checking retailer listings, installer notes and Ajax’s official documentation is recommended.
Conclusion: Why choose Ajax FireProtect 2 RB (Heat)
Ajax FireProtect 2 RB (Heat) is a focused, reliable option for indoor heat detection where smoke detectors may be less appropriate or where heat sensing is part of a layered fire safety approach. Its strengths include Class A1R sensing for rapid-rise and high-temperature events, secure long-range wireless communication via the Jeweller protocol, a strong built-in siren, and long-lasting replaceable CR123A batteries. The device is well suited for kitchens, garages, attics, workshops and retrofit installations where a monitored wireless system is desired.
At a suggested price of approximately 89 (suggested retail), FireProtect 2 RB offers a compelling balance of capability, low maintenance and integration potential for both homeowners and small-business operators. As with any life-safety device, it should be deployed as part of an overall fire detection plan: combine heat detectors with smoke detectors and appropriate notifications to maximise protection and comply with local regulations.
For detailed installation requirements, certification questions (UL/ULC variants) and integration options with Ajax Hubs, consult Ajax documentation or a qualified installer to ensure the system meets your specific needs and local safety codes.
