Ajax Door Protect Plus (8IN) – Wireless Magnetic Door Sensor with Shock & Tilt Detection
The Ajax Door Protect Plus (8IN) is a wireless combined opening, shock, and tilt detector designed to provide early intrusion detection and enhanced perimeter security. It features a built-in accelerometer that responds to vibration, impact, and inclination, detecting attempts to force, drill, or lift windows and doors. The device accurately measures the tilt angle relative to the ground, enabling protection of windows that are left slightly open for ventilation—allowing users to arm the system even when windows are tilted open. Ideal for residential and commercial use, the Door Protect Plus offers reliable, real-time alerts using Ajax’s secure wireless Jeweller protocol.
Specifications
| Specification |
Details |
| Sensor Type |
Magnetic reed switch + accelerometer |
| Activation thresholds |
Small magnet ≤1 cm, Large magnet ≤2 cm, Tilt >5° |
| Shock sensitivity |
Adjustable (3 levels), can ignore single shocks |
| Battery |
CR123A, 3V; up to 5 years |
| Communication |
Jeweller protocol, AES encryption, up to ~1 200 m range |
| Operating frequency |
868.0–868.6 MHz (region‑dependent bands) |
| Tamper / sabotage |
Tamper switch, anti‑spoofing, jamming detection |
| External input |
NC‑type wired detector supported |
| Operating environment |
Indoor use; −10 °C to +40 °C; humidity up to 75%; IP50 enclosure |
| Dimensions / Weight |
Ø 20 mm × 90 mm; ~29 g |
| Opening cycles |
Rated for up to ~2 million openings |
| Warranty & service life |
2‑year warranty (battery excluded); device life up to 10 years |
Key Features
• Dual sensing: Reed‑switch contact for openings + accelerometer for vibration and tilt. (Tilt threshold: ~5° to 25°, shock sensitivity adjustable).
• Tamper‑resistant: Includes tamper detection (SmartBracket triggers a tamper alarm if removed), plus authentication, jamming detection, and encrypted two‑way communication.
• Long-range wireless: Jeweller protocol offers up to ~1,200 m in open space (varies by region). Two‑way communication, frequency hopping, AES encryption.
• Extended battery life: CR123A battery (pre‑installed) provides up to 5 years runtime. Low battery alerts are issued well in advance.
• External contact support: Allows connection of a third‑party wired detector via NC contact input.
• Compact design: Ø 20 mm × 90 mm; weight approx. 29 g; available in white or black.
• Fast installation: Ready out of box (battery installed), connects via single‑click in Ajax app, mounts via SmartBracket.
Applications
• Residential: Ideal for doors, windows (including roof windows) and sliding doors, ading opening and tamper detection.
• Commercial: Offices, retail, storage units—especially where vibration/tilt detection can detect forced entry or tampering.
• High‑security assets: Safes, display cases, cabinets, or any environment where tilt or vibration may indicate unauthorized movement.
• Hybrid sensor configurations: Can be paired with internal motion sensors (e.g. Motion Protect) for layered security coverage.
Summary
The Ajax DoorProtect Plus is a powerful and flexible sensor offering more than just door/window opening detection—it adds resistance to tampering and forced entry via vibration/tilt sensing, all through secure wireless connectivity and extremely long battery life. It's especially suitable for installations that require fast, reliable intrusion alerts and minimal maintenance.
If you need help with compatibility, mounting layouts, or app configuration scenarios, feel free to contact us.
