Introduction: Ajax Superior MotionProtect G3 Fibra — Key features at a glance
The Ajax Superior MotionProtect G3 Fibra is a professional, wired PIR motion detector designed for high‑security indoor installations. Engineered to meet EN 50131 Grade 3 requirements, the device combines sensitive passive infrared detection with SmartDetect signal processing, built‑in anti‑masking, tamper protection and secure two‑way Fibra communication. With a detection range of up to 15 m and firmware update capabilities over the wire, this detector is optimised for commercial sites where reliability, resistance to interference and rapid incident reporting are essential.
- Wired Fibra communication:two‑way, encrypted communication with firmware updates over the line for futureproofing and secure management.
- SmartDetect PIR:accurate detection to 15 m with temperature compensation and filtering to reduce false alarms.
- Anti‑masking:active detection of covering or obstruction attempts to prevent blind spots and tampering.
- Grade‑3 certified performance:designed and documented to meet EN 50131 Grade 3 for higher‑risk commercial environments.
- Professional focus:intended for accredited installers and system integrators to ensure proper siting, cabling and configuration.
Detailed specifications and practical benefits
- Detection method:PIR (SmartDetect) with anti‑masking — delivers reliable motion detection while reducing spurious alarms caused by environmental changes.
- Detection distance:up to 15 m — suitable for covering hallways, open office spaces, retail shop floors and other medium to large indoor areas.
- Detection angle:approximately 90° horizontal and 71° vertical — provides broad coverage with focused sensitivity.
- Detectable speed:0.1–4.0 m/s — captures slow and fast human movement while ignoring very slow environmental motion that could trigger false alerts.
- Suggested mounting height:2.4 m — a common commercial mounting height that balances coverage and avoidance of obstructions.
- Mask detection time:up to approximately 120 s (depending on obstacle) — quickly reports attempts to obscure the detector’s view.
- Line voltage:7–30 V DC — flexible installation across typical commercial power supplies.
- Power consumption:roughly 90 mW (typical) — low power draw which is important on long wired lines and larger installations.
- Communication:Fibra wired two‑way protocol — secure communications with the hub, remote status reporting and the ability to receive firmware updates over the cable.
- Max line length:up to ~2,000 m (cable type dependent) — supports sprawling installations without the need for repeaters in many cases.
- Ingress rating:IP30 — designed for indoor use only, not suitable for exposed outdoor locations.
- Dimensions and weight:120 × 62 × 52 mm; ≈156 g — compact, unobtrusive housing for ceiling or wall mounting using the SmartBracket.
- Operating temperature:−10 °C to +40 °C — appropriate for typical commercial indoor environments.
- Intended location:indoor, commercial/high‑security installations where Grade‑3 performance is required.
- Intrusion standard:EN 50131 Grade 3 — suitable for environments with elevated threat profiles and where accredited certification is required.
- Tamper protection:SmartBracket tamper switch reports removal or sabotage attempts.
- Manufacturer documentation:refer to Ajax official manual for certificates, UKCA/CE marking and detailed installation rules; installers should follow all local regulations and recommended wiring practices.
Why these specifications matter — practical benefits
The combination of SmartDetect PIR filtering and temperature compensation improves detection accuracy, helping to lower false alarm rates that can otherwise erode confidence in a security system. Anti‑masking protects the detector itself from being blinded by spray, tape or passive coverings — a common tactic in sophisticated intrusion attempts. Fibra two‑way wired communication delivers strong resistance to RF jamming that can affect wireless devices and supports firmware updates over the line so that devices can receive security and functionality improvements without physical replacement. EN 50131 Grade‑3 compliance signals that the detector meets a higher regulatory bar for tamper resistance, detection reliability and overall performance, making it a fit for banks, data centres, government buildings and other sensitive sites.
Use cases and scenarios where the Superior MotionProtect G3 Fibra excels
- Financial institutions and vaults:Grade‑3 performance and anti‑masking make the detector suitable for areas where concealment and tampering are a realistic threat.
- Data centres and server rooms:long detection range and low false alarm rate reduce disruption and ensure reliable intrusion alerts in controlled‑environment rooms.
- Retail and high‑value stores:floor coverage, anti‑masking and robust wired communications protect merchandise areas and stock rooms.
- Warehouses and loading bays (indoor):15 m range and broad angle coverage are useful for corridors and loading areas, provided the environment is within the operating conditions.
- Museums, galleries and exhibition spaces:preventing tampering and blind spots is critical around irreplaceable artefacts; Grade‑3 detectors add a layer of assurance.
- Large integrated systems:Fibra’s extended line lengths and two‑way supervision simplify wiring and monitoring of many devices across a campus or large facility.
Comparisons with similar products and alternatives
When selecting a motion detector for commercial security projects you’ll typically weigh wired Grade‑3 detectors like the Ajax Superior MotionProtect G3 Fibra against wireless detectors and other wired models from specialist security manufacturers. Key differences to consider:
- Wired Fibra vs wireless detectors:wired Fibra devices avoid RF interference and jamming risks, support longer cable runs, and allow firmware updates over the line. Wireless detectors offer installation flexibility and lower upfront cabling costs but may be vulnerable to jamming and battery depletion.
- Grade‑3 vs Grade‑2 detectors:Grade‑3 devices meet stricter standards for resistance to tampering and detection reliability. If your site requires certification or faces elevated risk, Grade‑3 is the appropriate choice; Grade‑2 can suffice for lower‑risk commercial or residential installations.
- Anti‑masking availability:not all PIR detectors include anti‑mask functionality—especially lower‑cost or older models. The built‑in anti‑masking in the Superior MotionProtect G3 Fibra provides a tangible security advantage in environments where detectors could be intentionally obscured.
- Price and value:with a suggested retail price around $110, this device sits competitively among professional wired PIR detectors. The cost reflects Grade‑3 certification, anti‑masking, Fibra communications and firmware update capability — features that reduce lifecycle risk and maintenance costs compared with cheaper, uncertified detectors.
Installer and user feedback (typical impressions)
While individual reviews will vary by project, common feedback from professional installers and system integrators working with similar Ajax Fibra devices highlights several strengths:
- Clear documentation and integration options when working within the Ajax Fibra ecosystem, simplifying commissioning of multi‑device installations.
- Reliable communication over long cable runs, reducing the need for intermediate repeaters in many site topographies.
- Anti‑mask and tamper reporting are frequently cited as decisive features for high‑security clients, because they address real attack vectors that ordinary PIRs do not.
- Low power consumption and robust detection filtering mean fewer nuisance alarms and lower maintenance overhead.
Note: specific customer testimonials were not provided. For direct user reviews, ask your authorised Ajax partner or installer for references from comparable projects.
Conclusion: Is the Superior MotionProtect G3 Fibra the right choice?
For commercial and high‑security installations that require reliable motion detection, tamper resilience and protection against masking attempts, the Ajax Superior MotionProtect G3 Fibra is a strong contender. Its SmartDetect PIR, anti‑masking, EN 50131 Grade‑3 compliance and Fibra wired two‑way communications combine to deliver performance, security and futureproofing through firmware updates over the line. Intended for accredited installers and system integrators, this detector is best deployed where professional design and installation practices are followed.
If your project calls for a wired, certified Grade‑3 detector with anti‑masking and long cable runs, the Superior MotionProtect G3 Fibra offers a compelling balance of capability and cost. For final selection, consult with an authorised Ajax partner to confirm compatibility with your control panel, review site‑specific installation guidance and obtain official certification documentation and warranty details from the supplier.
