Ajax - Wireless opening detector (Ajax DoorProtect)
Wireless opening detector that notifies of first signs of room intrusion by means of a broken door or window. It can be mounted on all types of doors including a metal base.
DoorProtect is a wireless door and window opening detector designed for indoor use. It can operate up to 7 years from a pre-installed battery and capable to detect more than one million openings. DoorProtect has a socket for connecting an external detector.
Operates up to 7 years without battery replacement
External contact is available for connecting third-party detectors
Includes magnets of various sizes for installation on narrow frames and door frames
Principle of operation
The device detects the door or window being opened by means of British-made hi-end reed switches on which the magnetic field acts. It can operate in the transmitter mode, sending a signal from the wired sensor to the hub.
Features
The device consists of two modules — detector and magnet. The set includes two magnets: the big magnet is installed at a distance of up to 2 cm, and the small magnet up to 1 cm.
Installation and set up
Ready to operate straight out the box: the battery is already installed, therefore there is no need to disassemble the detector. With one click, it can be connected to the hub in the mobile application. It can be mounted on the SmartBracket in just a few minutes.
Tech specs
Classification: Point magnetic and contact radio channel security detector
Type of detector: Wireless
Installation method: Indoors
Compatibility: Operates with all Ajax hubs, range extenders, ocBridge Plus, uartBridge
Sensing element: Reed switch
Alarm signal delivery time: 0.15 s
Activation threshold
- Small magnet — 1 cm
- Big magnet — 2 cm
Power supply: Battery: CR123A battery, 3 V
Battery life: Up to 7 years
Jeweller radio technology:
- Communication range with central unit — up to 1,200 m in an open space
- Two-way communication between devices
- Operating frequencies — 868.0-868.6 MHz
- Self-adjusting RF output power — up to 20 mW
- Block encryption based on AES algorithm
- Detector polling period — 12−300 s
Temperature sensor: Available
Operating temperature range: From -10°С to +40°С
Permissible humidity: Up to 75%
Anti-sabotage
- Protection against fraud
- Jamming detection
- Tamper-resistant
Remote setting and testing: yes
Diameter: 20 mm
Height: 90 mm
Weight: 29 g
Certification: Grade 2, CE
Warranty: Replacement and repair within 24 months of the date of sale. Batteries are not covered under warranty.
Complete set
- DoorProtect opening detector
- SmartBracket mounting panel
- Two magnets
- CR123A battery (pre-installed)
- External contact
- Installation set
- User's guide
Specifications
Use | Door/Window Opening |
---|---|
Type | Sensor |
Function | Opening |
Protocol | Ajax |
Reviews (2) - Review moderation


Comme le reste des produits, installation ultra rapide et simple. Réactivité des alarmes ultra performante. Seul petit bémol, je trouve un peu volumineux.
L'utilisation d'un contact extérieur est très utile
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