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Opening Detection: Uses high-end British reed switches to detect when a door or window is opened.
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Vibration & Shock: Triggers an alarm if someone tries to force the lock, kick the door, or break the glass.
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Tilt Monitoring: Detects if a window's vertical slope changes by more than 5°, allowing you to secure windows even when they are tilted open for fresh air.
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External Input: Includes a terminal to connect an additional third-party wired sensor, effectively making it a wireless transmitter for existing hardware.
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Ready out of the box: The battery is pre-installed.
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One-click connection: Scan the QR code in the Ajax app to add it to your system.
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Mounting: Includes two magnets of different sizes to accommodate various frame widths and door offsets.
Ajax DoorProtect Plus Black
Wireless Opening, Shock, and Tilt Detector
The Ajax DoorProtect Plus is a professional-grade security sensor that protects your home or office from more than just basic intrusion. While standard sensors only trigger when a door opens, the Plus model features a built-in accelerometer, allowing it to detect shocks, vibrations, and changes in tilt. This makes it the ideal choice for protecting windows left in ventilation mode or high-value entry points.
Key Detection Capabilities
Technical Specifications
| Feature | Details |
| Communication | Jeweller Radio Technology (up to 1,200m range) |
| Sensor Types | Reed switch (magnetic) and Accelerometer |
| Tilt Threshold | Adjustable from 5° to 25° |
| Shock Sensitivity | Low, Medium, or High (adjustable) |
| Battery Life | Up to 5 years (CR123A battery included) |
| Dimensions | 20 mm (Diameter) × 90 mm (Height) |
| Compatibility | All Ajax Hubs and Range Extenders (ReX) |
Why Choose the "Plus" Version?
Standard door contacts are reactive—they only tell you when a thief has already succeeded in opening the door. The DoorProtect Plus is proactive; it can detect the vibration of a power tool or a heavy blow before the door even gives way.
It is also highly resistant to sabotage, featuring an anti-masking system and encrypted communication that prevents radio interference or signal jamming.
Installation
Product Brochure