Ajax DoorProtect Plus (Jeweller) – Wireless Opening, Shock & Tilt Detector (Black, 9NA)

Product Overview

The Ajax DoorProtect Plus  28268.21.BL3, 9NA region frequency is an advanced wireless opening detector with integrated shock and tilt sensors, engineered to protect doors, windows, roof hatches, and skylights within the Ajax security ecosystem. Beyond traditional magnetic opening detection, it incorporates an onboard accelerometer that instantly registers physical impacts, vibrations, attempts to kick or pry open the door, and angle tilt changes exceeding 5°.

Communicating via the proprietary Jeweller wireless radio protocol across distances up to 1,200 meters in open space, DoorProtect Plus allows windows to be left tilted open in ventilation mode while still maintaining active perimeter defense. Equipped with two interchangeable magnets, an external wired contact input (NC), and a pre-installed CR123A battery providing up to 5 years of autonomous operation, it delivers comprehensive perimeter intrusion detection in a matte black casing.

Key System Features & Functionality

• Triple Intrusion Detection: Combines high-precision magnetic opening detection, vibration/shock sensing, and tilt angle monitoring (> 5°) in a single compact device.

• Ventilation Mode Armed State: Enables arming while windows are left partially tilted open, triggering alarms only if the window is moved, tilted further, or struck.

• Shock & Impact Sensor: Built-in accelerometer detects forced entry attempts and structural impacts before an intruder breaches the entryway.

• Jeweller Wireless Technology: Two-way encrypted communication up to 1,200 meters (3,900 ft) line-of-sight with anti-jamming frequency hopping.

• External NC Contact Input: Terminal interface allows integration of third-party wired sensors or roller shutter contacts.

• Up to 5 Years Battery Life: Powered by a pre-installed CR123A lithium battery with intelligent energy conservation.