Introduction to Ajax FireProtect 2 SB and its key features
Ajax FireProtect 2 SBis a modern wireless ceiling‑mounted fire detector that combines dual‑spectrum optical smoke sensing with fast temperature‑rise detection. The SB variant ships with sealed, non‑replaceable lithium batteries designed to power the unit for up to 10 years, making it a low‑maintenance choice for homes, flats, offices and many commercial settings. Built‑in features such as an 85 dB siren, the HazeFlow 2 false‑alarm reduction algorithm and encrypted Jeweller wireless communications make the FireProtect 2 SB an attractive option for anyone looking to combine reliable fire detection with smart security system integration.
Detailed description of specifications and benefits
- Sensors:Dual‑spectrum optical (photoelectric) smoke sensor and two A1R‑class thermistors for temperature and rapid temperature‑rise detection.
- Power:2 × preinstalled non‑replaceable lithium batteries (sealed) rated for up to 10 years service life (SB variant).
- Alarms:Built‑in siren up to 85 dB; high temperature alarm around 64 °C and fast‑rise spike detection (~10 °C/min typical).
- Connectivity:Jeweller encrypted radio protocol with long open‑space range (up to ~1,700 m, region and environment dependent) and anti‑spoofing protection.
- Installation:Ceiling mounting via SmartBracket quick‑mount with tamper detection.
- Environmental & physical:Operating temperature 0–50 °C, humidity up to 80% non‑condensing, IP20 rating, dimensions 124 × 124 × 45 mm, weight approx. 270 g.
- Certifications:Available with EN / UL / UKCA / CE variants—confirm SKU and manual for your region.
The dual‑spectrum optical smoke sensor is tuned to detect a range of combustion products, including slow smouldering fires and flaming fires that produce different particle sizes. Paired with two A1R‑class thermistors, the detector can respond either to sustained high temperature or a rapid temperature spike, improving detection where smoke may be limited but heat rises quickly.
The sealed 10‑year battery removes the need for battery swaps and the worry of depleted batteries—ideal if you want a truly low‑maintenance device. When the batteries reach end of life, the unit is replaced, which also ensures the detector’s sensing elements are not used beyond their rated operational life.
HazeFlow 2 and a dust‑resistant smoke chamber reduce nuisance alarms from cooking vapour, steam and other non‑hazardous aerosols. This is especially useful in homes and apartments where false alarms are common sources of annoyance and can lead to disabled devices.
Integration with an Ajax hub gives remote alerts to your phone and enables synchronous interconnection: when one detector alarms, others in the system can sound too. The Jeweller protocol provides encrypted communications with long range and low power consumption, suitable for installations where local monitoring or a security system is already in place.
Use cases and scenarios where the FireProtect 2 SB excels
- Domestic homes and flats:Ceiling mounting, long battery life and false‑alarm reduction make this detector ideal for family homes and flats where low maintenance and reliability are priorities.
- Holiday lets and rental properties:Sealed battery life of up to 10 years reduces the need for property managers or guests to change batteries, and system integration lets owners get remote alerts via the Ajax hub.
- Elderly care and assisted living:Reliable detection and loud onboard siren help ensure occupants are alerted promptly. Remote notifications to carers or property managers are possible when integrated with a hub.
- Small offices and retail:Where unobtrusive, ceiling‑mounted detection and networked alarm reporting are required, FireProtect 2 SB offers a neat, smart solution.
- Integrated smart security systems:For users who want both security and life‑safety devices on the same platform, the FireProtect 2 SB pairs with Ajax hubs to provide a combined, managed solution.
Note: the detector is IP20 rated (indoor use) and should not be installed in very dusty, greasy or extremely humid locations. Avoid siting directly above cooking appliances where steam and grease can trigger nuisance alarms—follow the Ajax installation manual and local fire safety guidance for correct placement.
Comparisons with similar products on the market
When comparing FireProtect 2 SB with other wired or wireless smoke alarms, several distinguishing points emerge:
Many traditional smoke detectors use replaceable AA or 9V batteries, requiring periodic replacement and a risk that occupants remove batteries entirely when nuisance alarms occur. The sealed 10‑year battery in the SB model eliminates routine battery changes and reduces the likelihood of a non‑functional detector due to a missing or dead battery. This matches the trend among premium detectors toward long‑life sealed power sources.
Some detectors rely solely on optical (photoelectric) or ionisation sensing. Dual‑spectrum optical sensing improves sensitivity across a broader range of smoke particle types, and the addition of temperature‑based detection (A1R thermistors) helps detect fast‑developing fires even when smoke signals are limited. This makes FireProtect 2 SB more versatile than single‑sensor detectors in mixed environments.
Wi‑Fi enabled detectors (and some consumer devices) offer direct cloud notifications, but may be less secure and drain local network bandwidth. The Ajax system uses a low‑power encrypted radio (Jeweller) designed for security installations, offering long range and resilient communications with hubs and other devices. For professionally managed or homeowner‑monitored systems, this provides a stronger security posture and more predictable performance.
HazeFlow 2 algorithm and a dustproof smoke chamber aim to lower nuisance alarms compared with basic optical detectors. While no detector can eliminate all false alarms, the combination of advanced signal processing and chamber design helps maintain sensitivity while reducing unwanted activations from cooking and steam.
Customer testimonials and typical feedback
While individual reviews will vary, common themes reported by users of Ajax FireProtect 2 series detectors include:
- Ease of installation:installers and DIY users frequently praise the SmartBracket quick‑mount and straightforward pairing with Ajax hubs.
- Low maintenance:owners appreciate the sealed 10‑year battery and the peace of mind of not needing to change batteries yearly.
- Integration benefits:users of Ajax security systems highlight the value of synchronous alarm interconnection and remote push notifications.
- Reduced nuisance alarms:many cite fewer false alarms compared with older optical alarms, particularly when devices are sited correctly.
Constructive feedback commonly mentioned includes the sealed battery design: while convenient, it means the entire unit must be replaced at end of life rather than swapping batteries. Some users also remind others to verify local certification (EN/UKCA/UL) for compliance with regional fire safety regulations before purchase and installation.
Conclusion: why choose Ajax FireProtect 2 SB
The Ajax FireProtect 2 SB is a well‑rounded wireless smoke and heat detector that aims to balance sensitivity, usability and low maintenance. Its dual‑spectrum optical sensor plus thermistors offer flexible detection for a variety of fire scenarios; HazeFlow 2 and a dust‑resistant chamber help reduce false alarms; and the sealed 10‑year battery provides a convenient, long‑life solution for homeowners, landlords and managers who want fewer visits for battery changes.
Integration with Ajax hubs via the encrypted Jeweller protocol provides remote alerts, interlinked alarm responses and secure communications—features that will appeal to those who already use, or are planning to deploy, a smart security ecosystem. At a suggested price of around 39 (check local retailer pricing and SKU details) the FireProtect 2 SB represents a competitive choice for users looking to combine modern detection technology with low maintenance and system integration. Always confirm the exact SKU for any CO capability, and check regional certifications and installation guidance before specifying or fitting the device.
In short: if you want a reliable, low‑maintenance detector that fits into a smart security setup and reduces the hassle of routine battery changes, the Ajax FireProtect 2 SB is a strong option worth considering.
