Ajax MotionProtect Plus - Wireless motion and microwave PIR
Ajax MotionProtect Plus - Wireless motion detector with PIR and microwave sensor
- Wireless motion detector for indoor use
- Detects movement up to 12 meters
- Combines a PIR sensor and a K band microwave sensor
- Reduces false alarms from air conditioning, heat and drafts
- SmartDetect analysis to reduce false alarms
- Can ignore small pets up to 20 kg and 50 cm
- Wireless range up to 1,200 meters
- Up to 5 years of battery life
- Tamper alarm on removal
- Suitable for homes, offices, shops and rooms with thermal disturbances
Ajax MotionProtect Plus Jeweller is a wireless motion detector developed for rooms where standard PIR sensors may experience false alarms. The detector combines a classic PIR sensor with an additional K band microwave sensor, which helps verify movement and reduce interference from thermal disturbances.
| Technical specifications | |
| Product type | Wireless IR motion detector with additional K-band microwave sensor |
| Detection elements | PIR sensor Microwave sensor |
| Microwave sensor | K-band microwave sensor to prevent false alarms caused by thermal interference Operating frequency: 24 GHz |
| Motion detection distance | Up to 12 m When installed at a height of 2.4 m |
| Motion detection angle | Horizontal: 88.5° |
| Motion detection speed | From 0.3 to 2 m/s |
| Sensitivity | 3 levels Adjusted in Ajax apps by a PRO or user with admin rights |
| Pet immunity | Weight up to 20 kg Height up to 50 cm |
| False alarm prevention | SmartDetect software algorithm Microwave verification of PIR detections |
| Temperature compensation | Effective motion detection from −10 °C to +40 °C |
| Communication technology | Jeweller radio communication Two-way communication Block encryption with dynamic key Remote control and configuration in Ajax apps |
| Frequency bands | 866.0–866.5 MHz 868.0–868.6 MHz 868.7–869.2 MHz 905.0–926.5 MHz 915.85–926.5 MHz 921.0–922.0 MHz Depends on sales region |
| Radio communication range | Up to 1200 m in open space |
| Maximum effective radiated power | Up to 20 mW |
| Radio signal modulation | GFSK |
| Sabotage protection | Tamper alarm on removal from surface or mounting panel Protection against spoofing with device authentication |
| Communication loss detection | After 36 seconds Depends on Jeweller or Jeweller/Fibra settings |
| Installation | Recommended installation height: 2.4 m Designed for indoor use only |
| Power supply | 1 × CR123A battery Pre-installed Type C |
| Battery life | Up to 5 years |
| Operating voltage | Operating voltage range: 2.1–3.3 V DC Nominal operating voltage: 3 V DC |
| Power consumption | Quiescent current: 31 μA Maximum current: 62 mA |
| Battery capacity | Full battery capacity: 1600 mAh End-of-life battery capacity: 300 mAh |
| Battery voltage thresholds | Low battery voltage: 2.5 V DC Low battery recovery voltage: 2.7 V DC End-of-life battery voltage: 2.1 V DC |
| Battery manufacturer | Huiderui or Panasonic |
| Operating temperature | From −10 °C to +40 °C |
| Operating humidity | Up to 75% |
| Protection class | IP50 |
| Dimensions | 110 × 65 × 50 mm |
| Weight | 96 g |
| Colours | Black White |
| Package contents | MotionProtect Plus Jeweller SmartBracket mounting panel CR123A battery (pre-installed) Installation kit Quick start guide |
| Warranty | 24 months |
| Reservations are made for possible errors and changes in the specifications | |
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Here you can see the compatibility between the various units and Hubs from Ajax
https://ajax.systems/tools/devices-compatibility/
Ajax MotionProtect Plus
MotionProtect Plus is especially suitable for rooms with air conditioning, heat pumps, fireplaces, strong solar heating or other environments with rapid temperature changes. The additional microwave sensor helps verify whether movement is actually caused by a person.
Two sensors working together
The detector uses both a PIR sensor and a K band microwave sensor. The PIR sensor detects thermal movement, while the microwave sensor is used for additional verification.
The microwave sensor activates only on suspicious movement and helps reduce false alarms from, for example, heaters, air conditioners, moving curtains, sunlight or warm air streams.
Detection up to 12 meters
MotionProtect Plus can detect movement up to 12 meters away when correctly mounted. The detector is designed to detect people moving across the detection area.
Suitable for rooms with thermal disturbances
Standard PIR sensors can be affected by rapid temperature changes in some environments. MotionProtect Plus is designed to operate more stably in these conditions.
That makes it particularly suitable for environments such as:
- Rooms with air conditioning
- Rooms with fireplaces or wood stoves
- Shops with large glass facades
- Technical rooms or server rooms
- Rooms with strong solar heating
Ignores small pets
The sensor can ignore small pets up to 20 kg and 50 cm when installed correctly. This makes it suitable for homes and businesses with dogs or cats.
Pet immunity, however, depends on the animal’s size, position relative to the detector, jumping, furniture and room layout. No motion detector is 100% immune to animals.
If you want maximum security without the risk of false alarms from pets, we recommend combining the solution with magnetic contacts on doors and windows.
SmartDetect analysis to reduce false alarms
Ajax SmartDetect analyses movement patterns and helps distinguish people from other disturbances. The combination of a PIR and a microwave sensor provides more stable performance in challenging environments.
Stable wireless communication
MotionProtect Plus communicates wirelessly with the Ajax hub via Jeweller technology. The system constantly monitors the connection and notifies you of faults or signal loss.
Up to 5 years of battery life
The detector is powered by a CR123A battery with up to 5 years of battery life under normal conditions. Battery status can be monitored directly in the Ajax app.
Quick installation and setup
The detector mounts to the Ajax SmartBracket without opening the casing. Adding it to the system is fast via the QR code in the Ajax app.
Tamper protection
The built-in tamper function detects if the detector is removed from the wall or opened. The system sends an immediate alert in case of sabotage attempts.
Key technical points
- Type: Wireless motion detector
- Use: Indoor
- Sensors: PIR sensor and K band microwave sensor
- Microwave frequency: 24 GHz
- Detection range: Up to 12 meters
- Detection angle: 88.5° horizontal
- Movement speed: 0.3 to 2 m/s
- Sensitivity: 3 levels
- Pet immunity: Up to 20 kg and 50 cm
- Analysis algorithm: SmartDetect
- Temperature compensation: Yes
- Wireless technology: Jeweller
- Wireless range: Up to 1,200 meters
- Tamper protection: Tamper alarm
- Battery: 1 × CR123A
- Battery life: Up to 5 years
- Operating temperature: −10 °C to +40 °C
- Humidity: Up to 75%
- Protection rating: IP50
- Dimensions: 110 × 65 × 50 mm
- Weight: 96 g
- Colors: White and black
Specifications are subject to change and may contain errors