Ajax MotionProtect Outdoor Detector – 90° Coverage with Zero False Alarms

Ajax MotionProtect Outdoor

MotionProtect Outdoor is a wireless outdoor motion detector for the Ajax security system. The detector communicates with the hub via protected Jeweller radio protocol at a distance up to 1,700 meters in the line of sight.

MotionProtect Outdoor features protection against blocking the detector view (anti-masking system) and triggering by pets (pet immunity).

The motion detection distance is adjustable: from 3 up to 15 meters.

MotionProtect Outdoor can operate both on pre-installed batteries or use an external power supply. Depending on the detector settings, the batteries’ life is up to 5 years.

When the system is armed, the detector continuously receives signals from two PIR sensors. If both sensors detect identical motion, MotionProtect Outdoor instantly transmits an alarm signal to the hub and blinks with a green LED. MotionProtect Outdoor ignores animals, birds, insects, as well as swaying plants and trees.

To connect MotionProtect Outdoor to the hub, simply scan the QR code with your smartphone’s camera. Thanks to SmartBracket mounting plate, the device can be installed without disassembling the body. Use the Ajax app to test and configure the detector.

Only available in white.

Download user manual in PDF format (21 pages)

Link to manufacturer website

Most motion detectors with IR sensors count pulses, which is a simple method: a dozen of pulses raise an alarm. However, this method is unreliable since completely different events can trigger similar signals under certain conditions.

Ajax have used a more sophisticated signal analysis system.

1. MotionProtect Outdoor raises the alarm only if both sensors react to the movement — this is the first stage of protections against false alarms.

2. The signals of two sensors are analysed by the SmartDetect algorithm modified with allowance for the specifics of outdoor interferences, and then the waveforms are compared. At this stage, the Ajax MotionProtect Outdoor determines a person in a 100% of events and the probability of false triggering is relatively low. This is the second stage of protection and we could stop at that, but we needed absolute reliability.

3. The spectral analysis was the third barrier. The algorithm for comparing the frequency components of the signals of two sensors is unique for security devices — this is the know-how of the Ajax Systems that guarantees 100% accuracy of Ajax MotionProtect Outdoor. It is inexpedient to start the process after every motion detection since complex calculations would reduce the detector battery life to 2 years. Therefore, we connect it only if we are not completely confident in the cause of triggering during the analysis of the similarity of signals.

Having solved the problem of the motion detection system accuracy, Ajax concentrated on the MotionProtect Outdoor body. An outdoor installation significantly increases the possibility of sabotage: a disarmed device can be covered with a cloth, lenses can be glued or painted. Moreover, an intruder can try to detach it from the mounts, open and damage the electronic components or simply break it with something heavy. A reliable sensor must either deal with the threat or report the problem to the users and the security company.

The MotionProtect Outdoor body is made of durable plastic and is equipped with a tamper that detects the opening or attempt to detach it from the SmartBracket mounting panel.

The anti-masking protection system (attempts to block the view of the detector) includes three special detectors and an algorithm analysing their signals. It will record and trigger an alarm in all typical cases of masking in just seconds.

The Ajax MotionProtect Outdoor anti-masking system conforms to Grade 3 security standard EN 50131: “ready to confront intruders with professional skills and knowledge”.

In addition, MotionProtect Outdoor has rain and dust protection (IP55), can operate in humidity conditions reaching 100% at temperatures from -25°C to +60°C. Since the capacity of lithium batteries and, consequently, detector independence are significantly reduced during severe cold conditions, we have provided for the feasibility of connecting an external 5~28 V power source.

The wireless performance of MotionProtect Outdoor is also at a decent level — the Jeweller radio technology allows the hub to maintain two-way communication with the detector at distance up to 1,700 meters; alarms are transferred in 0.15 seconds.

MotionProtect Outdoor Technical Specifications