AJX-DP-B

Overview

The Ajax DoorProtect Jeweller (Black) represents a significant upgrade in wireless perimeter security, offering homeowners and businesses a reliable way to monitor doors, windows, and skylights. Engineered with a high-grade British reed switch capable of enduring over 2 million openings, this device ensures long-term durability without the need for frequent replacements. The system is designed for speed and precision, detecting any unauthorized entry attempts and transmitting an alarm signal in just 0.15 seconds to keep you informed instantly.

Description

The Ajax DoorProtect Jeweller (Black) is a premium wireless opening detector that combines robust security with sleek design. It utilizes a durable magnetic reed switch and intelligent power management to provide up to 7 years of battery life on a single CR123A cell. The device stands out for its versatility, featuring an integrated terminal that allows users to connect third-party wired detectors like vibration sensors or roller-shutter switches. With a secure Jeweller protocol range extending up to 1,200 meters and advanced anti-sabotage measures including tamper detection and frequency hopping, it offers comprehensive protection against physical interference and signal jamming.

Features

Why Choose This Door Detector
This security sensor is built to perform in demanding environments while maintaining a low profile. The sealed reed switch protects the internal components from dust and moisture, ensuring consistent performance over time. A key advantage of this unit is its ability to filter out false alarms caused by minor door rattles or wind vibrations through contact-chattering protection technology. This means you receive alerts only when necessary, reducing noise in your security system while maintaining high sensitivity for real threats.

Installation and management are streamlined through the mobile app, where users can connect the device to any Ajax hub by scanning a QR code. The system provides real-time updates on signal strength and battery status, allowing for remote monitoring without physical access to the hardware. Whether installed in a residential home or a commercial storefront, the compact cylindrical design blends seamlessly into various interior aesthetics.

Technical Performance and Range
The device operates using the Jeweller protocol on frequencies between 868.0-868.6 MHz, ensuring secure two-way communication with the central hub. This wireless connection supports a vast open-space range of up to 1,200 meters, making it suitable for large properties or buildings with thick walls. The system includes device authentication to prevent spoofing and jamming detection with frequency hopping to maintain connectivity even in congested radio environments.

The unit is compatible with all Ajax hubs, range extenders, ocBridge Plus, and uartBridge systems, offering flexibility for expanding your security setup. It carries an indoor protection class rating and comes pre-installed with a CR123A battery, ready to deploy immediately upon unboxing.

Installation Versatility
To accommodate different frame sizes and mounting requirements, the package includes two magnets of varying sizes. The small magnet is designed for thresholds up to 1 cm, while the large magnet supports gaps up to 2 cm. This dual-magnet system allows for flexible installation on narrow frames or complex profiles without compromising the security seal.

External Connectivity Options
For users requiring expanded coverage, DoorProtect includes an NC (normally closed) terminal clamp. This feature enables the integration of additional third-party wired detectors directly into the system. You can easily connect devices such as vibration sensors or roller-shutter switches to create a more comprehensive security network without needing extra hubs.

Key Specifications

• Model Number: AJX-DP-B (also referenced as MC420B)
• Battery Life: Up to 7 years on a single pre-installed CR123A battery
• Alarm Response Time: 0.15 seconds for instant notification
• Communication Range: Up to 1,200 meters in open space using Jeweller protocol
• Sensor Type: Sealed reed switch rated for over 2 million openings
• Magnet Thresholds: Small magnet (1 cm) and large magnet (2 cm)
• Anti-Sabotage: Includes tamper switch, device authentication, and jamming detection with frequency hopping
• Compatibility: Works with all Ajax hubs, range extenders, ocBridge Plus, and uartBridge
• Dimensions: 7 x 13 x 6 cm (0.2 kg weight)

What's in the Box

• Ajax DoorProtect Jeweller unit (Black)
• Small magnet for narrow frames
• Large magnet for standard profiles
• Pre-installed CR123A battery
• Mounting accessories and hardware

This product provides a robust solution for securing entry points with minimal maintenance requirements. Its ability to integrate third-party sensors while maintaining a long battery life makes it an ideal choice for both new installations and system upgrades.

Specifications

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Specifications
Product Code	AJX-DP-B
Key specifications
SKU	AJX-DP-B
Details
Product type	Wireless magnetic door/window opening detector
Battery life	Up to 7 years
Protection class	Indoor
Compatibility	All Ajax hubs, range extenders, ocBridge Plus and uartBridge
Communication range	Up to 1,200 m (open space)
Activation threshold	Small magnet 1 cm , large magnet 2 cm
Radio protocol	Jeweller, 868.0-868.6 MHz
Sensing element	Sealed reed switch (rated over 2 million openings)
Alarm signal delivery time	0.15 s
Tamper protection	Tamper switch (detachment)
Features	External NC terminal for third-party wired detectors , contact-chattering protection , device authentication , jamming detection with frequency hopping
Power
Power input	1 x CR123A (pre-installed)
Physical and environment
Mounting	Indoor
Colour	Black (model MC420B)
Weight	0.2 kg
Dimensions	7 x 13 x 6 cm

FAQ

Is the Ajax DoorProtect Jeweller suitable for outdoor installation?
The product is rated for indoor use only and is not designed to withstand outdoor environmental conditions.

How long does the battery last, and can I replace it?
The device features a pre-installed CR123A battery that provides up to 7 years of operation; however, replacing the battery requires removing the unit from its mounting position.

Can this detector connect to third-party wired sensors?
Yes, it includes an NC terminal clamp that allows you to integrate additional wired detectors like vibration sensors or roller-shutter switches.

Does it work with all Ajax security hubs?
The DoorProtect Jeweller is compatible with all Ajax hubs, range extenders, ocBridge Plus, and uartBridge devices.

What are the maximum distances for mounting the magnets?
You can use the included small magnet for gaps up to 1 cm or the large magnet for gaps up to 2 cm, allowing flexibility for various door and window profiles.