Ajax Superior MotionProtect Plus G3 Fibra Black — Grade 3 Motion Detector

Professional Grade 3 High-Security Ajax Superior MotionProtect Plus G3 Fibra Black Wired Dual-Technology (PIR + Microwave Radar) Motion Detector for Complex Environments

The Ajax Superior MotionProtect Plus G3 Fibra in black represents the pinnacle of wired intrusion detection for indoor spaces where system stability and absolute false-alarm rejection are critical requirements. Engineered to safeguard government complexes, financial institutions, power utilities, jewelry stores, and luxury commercial properties, this device is fully certified to meet the stringent demands of the European EN 50131 Grade 3 security standard. It offers maximum resilience against sophisticated intrusion attempts and physical sabotage.

To ensure flawless detection even under hostile environmental conditions, the detector combines two complementary physical sensing principles within a single coupled processing algorithm. Thermal variation is captured by a pyroelectric PIR sensor equipped with proprietary mirror optics, while the physical displacement of an intruder is confirmed simultaneously by a high-frequency K-band microwave radar (24.050 to 24.250 GHz). This dual-technology synergy renders the detector immune to thermal disturbances caused by HVAC systems, radiators, fireplaces, air currents, or direct sunlight, which frequently trigger false alarms in standard single-PIR motion sensors.

The detector covers a radial distance of up to 15 meters at a 90° horizontal viewing angle. Thanks to its advanced optical design and sensor element positioning, the blind zone directly beneath the device has been minimized to the absolute limit, enabling it to detect crawling intruders as close as 50 cm from the wall mounting point.

Full Tamper Resistance, Intelligent Diagnostics, and Fibra Bus Technology

In full compliance with Grade 3 requirements for high-risk sites, the Superior MotionProtect Plus G3 Fibra features an active infrared anti-masking system that constantly monitors optical path integrity. Any attempt to obscure the lens using paper, cloth, paint sprays, lacquers, or cardboard boxes immediately triggers a sabotage alert at the control panel—even while the security system is disarmed. The physical housing is protected by three independent physical tamper switches (monitoring case opening, SmartBracket detachment, and wall removal) backed by an integrated 3-axis accelerometer.

All alarms, events, and telemetry data are transmitted via the Fibra wired protocol. This proprietary bus technology provides dynamic block-encrypted bi-directional communication, line short-circuit protection, and bus line lengths of up to 2,000 meters. For full technical documentation and manufacturer specifications, visit the official page for Superior MotionProtect Plus G3 Fibra on Ajax Systems. To integrate this detector into a Grade 3 high-security environment, explore our selection of Ajax Superior Hub control panels.