Ajax MotionProtect Fibra Wired PIR Motion Detector, 12 m, Pet‑Immune, Black FIBRA-MOTIONPROTECT(BLACK)-44404.09.BL1

Introduction to the Ajax MotionProtect Fibra (Black) and its key features

The Ajax MotionProtect Fibra Wired PIR Motion Detector (Black) is a professional-grade, wired passive infrared (PIR) sensor designed for indoor security systems that use the Ajax Fibra platform. Built for reliability and low false-alarm rates, this detector offers motion detection up to 12 m, three configurable sensitivity levels, and pet-immunity when installed at the recommended height. Communicating over a two-way encrypted Fibra wired bus, the MotionProtect Fibra marries robust detection technology with secure, long-distance wiring capability — making it a strong option for both residential and commercial wired alarm installations.

Key features at a glance:

• 12 m PIR detection range with approximately 88.5° horizontal and 80° vertical coverage.
• Pet immunity for animals up to 20 kg / 50 cm (when mounted at recommended height).
• Three sensitivity levels plus SmartDetect false-alarm prevention algorithms.
• Two-way encrypted Fibra wired communication; compatible with Ajax Fibra hubs.
• Supports long cable runs (up to 2,000 m on U/UTP Cat.5) and is powered from the Fibra line (nominal 24 V DC).

Detailed description of specifications and benefits

The MotionProtect Fibra combines hardware design and signal processing to deliver dependable motion detection with minimal nuisance alarms. Below is a closer look at the specifications and the practical benefits they provide.

• Detection type:Passive infrared (PIR) sensor that senses changes in heat and movement across its fields of view. PIR technology is proven, reliable, and energy-efficient.
• Range & coverage:Detects human-sized motion up to 12 m with a broad horizontal coverage of roughly 88.5° and vertical coverage near 80°. This makes it ideal for covering medium- to large-sized rooms, corridors, and halls.
• Motion speed:Engineered to detect motion in the 0.3–2.0 m/s range, which captures typical intruder movement while filtering out very slow environmental drifts and rapid non-human triggers.

• SmartDetect & sensitivity levels:Three sensitivity settings (Low, Normal, High) combined with SmartDetect algorithms reduce false alarms caused by air currents, temperature gradients, and small moving objects. Installers can fine-tune sensitivity to the environment for the best balance between detection reliability and false-alarm immunity.
• Pet immunity:When mounted at the recommended 2.4 m height and configured correctly, the detector does not react to pets up to 20 kg and 50 cm in height. This is crucial for households and businesses that want reliable detection without disturbances from animals.

• Two-way encrypted bus:Communication is carried over Ajax Fibra — a wired, two-way, encrypted bus. This secures device communication and ensures reliable, deterministic signaling between detectors and the hub.
• Long cable runs & cable type:The detector supports up to 2,000 m of bus length on U/UTP Cat.5 cable, enabling centralized security designs across large properties without repeaters.
• Power consumption:Powered by the Fibra line (5–30 V⎓, nominal 24 V⎓). The detector draws very low quiescent current (≈70 µA at nominal voltage) and a small maximum current (≈1.8 mA at nominal voltage), easing power budgeting for larger wired installations.

• Mounting:The product includes a SmartBracket mounting plate and an installation kit for quick and secure mounting. The recommended height is about 2.4 m for optimal pet immunity and detection coverage.
• Form factor:A compact device (110 × 65 × 50 mm, ≈86 g) in a discreet black finish for unobtrusive indoor placement.
• Durability & standards:Designed for indoor environments (operating −10 °C to +40 °C, up to 75% non-condensing humidity). The product follows relevant compliance and safety markings (CE / UKCA where applicable).

Use cases and scenarios where the product excels

The MotionProtect Fibra is particularly well suited to scenarios demanding wired reliability, secure communication, and selective sensitivity to ignore pets. Typical use cases include:

• Homes with existing structured cabling or where a fully wired alarm system is desired for reliability and tamper resistance.
• Pet-friendly households where owners want motion protection without frequent false alarms from animals.
• Multi-room coverage where central management from an Ajax Fibra hub is preferred.

• Offices, retail stores, and small warehouses where wired detectors reduce maintenance needs and ensure continuous connectivity.
• Installations requiring long cable runs — the 2,000 m bus capacity on Cat.5 makes it practical for larger facilities and campus-style deployments.
• Locations needing tamper detection and secure device authentication to meet monitoring centre standards.

• Integrations with monitored alarm systems and professional installation workflows where documentation, predictable performance, and standards compliance matter.
• Projects where a wired backbone is preferred for resilience against wireless interference or jamming scenarios.

Comparisons with similar products on the market

When compared to other PIR detectors in the wired and hybrid categories, the MotionProtect Fibra competes strongly across several dimensions:

• Versus wireless PIR detectors:Wired Fibra devices like MotionProtect Fibra offer deterministic connectivity and do not rely on batteries (or rely on hub power for the bus), which reduces maintenance and eliminates battery lifespan concerns. Wireless detectors offer flexibility for retrofit scenarios but may be vulnerable to radio interference or require periodic battery replacement.
• Versus other wired PIR detectors:Many wired PIRs provide standard detection, but the MotionProtect Fibra stands out with its integration into the Ajax ecosystem, two-way encrypted communication, long bus reach (2,000 m on Cat.5), and built-in SmartDetect algorithms. These features are particularly valuable for installers looking for centralized configuration and monitoring via an Ajax hub/app.
• Versus pet-immune alternatives:Pet-immune models exist from multiple manufacturers, but effective immunity depends heavily on installation height and sensor optics. MotionProtect Fibra specifies pet immunity up to 20 kg / 50 cm when installed as recommended, which aligns with many mid-range pet-immune detectors and is suitable for most domestic pets.

Customer impressions and installer feedback

While individual experiences vary, typical feedback from installers and end users about devices like the MotionProtect Fibra highlights a few recurring points:

• Installers appreciate:The long bus distance and Cat.5 compatibility, which simplify cable routing across larger properties and reduce the need for repeaters. SmartBracket and the included installation kit speed up mounting and commissioning.
• Homeowners value:The pet-immunity feature combined with the high detection range — allowing rooms to be protected without nuisance alarms from family pets. The black finish is frequently mentioned for aesthetics in interiors with darker decor.
• Monitoring centres and professionals note:Reliable tamper reporting and device authentication are important for reducing false signals and confirming device integrity during audits or maintenance checks.

Note: These are aggregated impressions representative of how professionals and customers commonly evaluate detectors in this class, rather than endorsements from named individuals.

Conclusion: why the MotionProtect Fibra is a great choice

The Ajax MotionProtect Fibra (Black) is a compelling choice for anyone building or upgrading a wired security system. It blends proven PIR detection with modern features: pet-immunity, adjustable sensitivity, SmartDetect false-alarm reduction, and secure two-way Fibra communication. The support for long cable runs and low power consumption make it a practical pick for both residential and commercial installations. For professional installers, its compatibility with Ajax Fibra hubs and the included SmartBracket installation tools streamline deployment and integration into monitored systems.

In short, if you need a dependable wired PIR motion detector that reduces nuisance alarms, supports long-distance wired topologies, and integrates with a modern alarm platform, the MotionProtect Fibra is a versatile and effective solution.