MotionProtect Plus Jeweller uses a PIR sensor together with an additional K-band microwave sensor, rather than relying on PIR alone. According to Ajax, that extra microwave scan is used to help filter out false alarms caused by thermal interference such as air flows, heated curtains, blinds, fans, fireplaces, and air conditioners. The technical specifications also identify it as a wireless IR motion detector with an additional K-band microwave sensor for indoor use only. For buyers, that means this model is designed to be more dependable in rooms where ordinary PIR-only detectors can be more easily disturbed by changing indoor conditions. 

The technical specifications state a motion detection distance of up to 12 meters, or about 39 feet, when the detector is installed at the recommended height of 2.4 meters. Ajax also notes that the detector monitors an indoor area within a 39-foot radius in its user manual. The horizontal motion detection angle is listed as 88.5 degrees, and the supported motion detection speed is from 0.3 to 2 meters per second. In practical terms, that gives buyers a good idea of the coverage they can expect in hallways, rooms, and other indoor spaces when the detector is mounted correctly.

Yes, Ajax states that MotionProtect Plus Jeweller can ignore pets when it is properly installed and configured. The technical specifications list pet immunity for animals up to 20 kilograms in weight and up to 50 centimeters in height. Ajax also explains that correct installation height and proper sensitivity settings matter, because mounting the detector too low or placing it where pets can get closer to the sensing zone can increase unwanted alarms. That matters for buyers because the detector is designed to protect indoor spaces without turning normal pet movement into a constant source of frustration.

This detector is designed for indoor use only. The official technical specifications list its application as indoor use only, and the user manual repeats that the device is a wireless indoor motion detector. Its environmental specifications include an operating temperature range from −10 °C to +40 °C and a protection class of IP50, which fits indoor placement rather than exposed outdoor installation. For buyers, that means it is best suited to interior rooms, offices, hallways, and other protected indoor areas instead of exterior walls or open-air spaces.

Ajax lists the radio communication range as up to 1,200 meters, or about 3,900 feet, in an open space between the detector and a hub or range extender. The device uses Jeweller communication technology with two-way communication, encrypted data transmission, and frequency hopping to help prevent interference and jamming. Ajax also notes that the real-world range depends on site conditions, because walls and other obstacles can reduce performance compared with open-space figures. For buyers, that means the detector is built for strong wireless coverage, but installation planning still matters in larger or more obstructed buildings.

The technical specifications list one pre-installed CR123A battery and a calculated battery life of up to 5 years. Ajax also states in the user manual that the pre-installed battery can provide up to 5 years of autonomous operation, based on a hub inquiry frequency of 3 minutes. The specifications further list a full battery capacity of 1,600 mAh and identify the battery as Type C. For buyers, that means this detector is designed for long-term wireless operation with relatively low maintenance, which is a major advantage when you want dependable protection without frequent battery replacements.

MotionProtect Plus Jeweller combines several layers of false alarm control. The technical specifications list a K-band microwave sensor specifically to prevent false alarms caused by thermal interference, and they also list the SmartDetect software algorithm for false alarm prevention. Ajax’s user manual adds examples of interference sources such as air conditioners, fireplaces, heated blinds, fans, and air flows, explaining that the detector performs an additional RF scan when motion is detected. That gives buyers more confidence in environments where ordinary motion detectors may react too easily to heat-related disturbances rather than true intrusion movement.

Yes, the detector includes several anti-sabotage protections. The technical specifications list tamper notifications for attempts to detach the detector from the surface or remove it from the mounting panel, along with device authentication as protection against spoofing. Ajax also describes advanced sabotage protection as part of the Jeweller communication system, alongside encrypted communication and instant notifications. For buyers, that means the detector is not only watching for motion, but is also built to report attempts to interfere with the device itself.

The technical specifications list the complete set for this model. According to Ajax, the package includes the MotionProtect Plus Jeweller detector, the SmartBracket mounting panel, a pre-installed CR123A battery, an installation kit, and a quick start guide. The same specifications page also lists a 24-month warranty. That is useful for buyers because it confirms the key mounting and startup items included with the detector instead of leaving them to guess

Ajax says the recommended installation height is 2.4 meters, and the lens should face perpendicular to the expected intrusion path. The user manual also warns not to install MotionProtect Plus Jeweller too close to another MotionProtect Plus model, stating a minimum distance of 20 centimeters to avoid wave interference from the K-band microwave sensors. Ajax further notes that pets, furniture placement, and blocked sight lines can affect performance if installation guidelines are ignored. For buyers, that means correct placement is a big part of getting the pet immunity, false-alarm filtering, and coverage performance the detector is designed to provide.