Product Description
The AJAX#30852 Ajax Superior DoorProtect Fibra is a professional wired opening detector designed to provide reliable perimeter protection for doors, windows, roller shutters, cabinets, and other vulnerable entry points. Using dual reed-switch technology and Ajax's advanced Fibra communication protocol, the detector delivers instant intrusion alerts, encrypted communication, and remote management capabilities for commercial and residential security systems.
Designed exclusively for Ajax Fibra installations, the Superior DoorProtect Fibra combines exceptional reliability, low power consumption, anti-sabotage protection, and support for third-party NC wired detectors. With communication distances of up to 2,000 metres, installers can secure large facilities while maintaining stable and secure operation.
Its compact design allows discreet installation while providing dependable protection against unauthorized access attempts.
What's Included in the Box

Main Features
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Wired opening detector with dual reed switches
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Fibra encrypted wired communication technology
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Up to 2,000m communication range using U/UTP Cat5 cable
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Instant alarm notifications
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Advanced anti-sabotage protection
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Tamper alarm protection
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Device authentication against spoofing
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Supports additional third-party NC wired detectors
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Remote configuration via Ajax applications
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Magnet installation on either left or right side
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Compact and discreet design
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Low power consumption
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Indoor installation
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Available in White and Black
Detailed Specifications
Detection
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Device Type: Wired Opening Detector
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Detection Method: Magnetic Opening Detection
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Sensing Elements: 2 × Reed Switches
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Magnet Placement: Left or Right Side
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Additional Detector Input: NC (Normally Closed) Wired Detector
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Suitable For:
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Doors
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Windows
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Roller Shutters
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Cabinets
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Restricted Access Points
Communication
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Technology: Fibra
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Communication Type: Wired
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Two-Way Communication: Yes
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Encryption: Dynamic Encrypted Communication
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Remote Configuration: Yes
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Maximum Fibra Line Length: Up to 2,000m
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Cable Type: U/UTP Cat5 4-Core Cable
Anti-Sabotage Protection
Power
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Operating Voltage: 5–30V DC
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Nominal Voltage: 24V DC
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Maximum Power Consumption: 106mW
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Quiescent Current Consumption: 0.044mA
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Maximum Current Consumption: 4.4mA
Physical Specifications
Environmental
Warranty Information
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Manufacturer Warranty: 24 Months
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Backed by Ajax Systems Warranty Support
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Genuine Australian Supply Channel Product
About Ajax Systems
Ajax Systems is a globally recognised manufacturer of professional intrusion detection, life safety, automation, and security solutions. Trusted by millions of users worldwide, Ajax products combine cutting-edge technology, encrypted communications, and premium European engineering to deliver reliable protection for homes and businesses.

Practical Use Scenarios
Residential Security
Protect entry doors, sliding doors, and windows from unauthorised access.
Commercial Premises
Secure offices, retail stores, warehouses, and restricted access areas.
Roller Door Protection
Monitor warehouse roller shutters and service entrances.
Cabinet & Equipment Monitoring
Protect sensitive cabinets, server racks, and storage areas.
Integrated Ajax Security Systems
Combine with Ajax motion detectors, sirens, keypads, and hubs for complete perimeter security.
Datasheets & Resources
Excellence for the Australian and New Zealand Market
The AJAX#30852 Superior DoorProtect Fibra has been selected for professional security installations throughout Australia and New Zealand. Designed for integration with Ajax Fibra systems, it delivers dependable wired intrusion detection with encrypted communications and advanced tamper protection.
Benefits include:
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Genuine Ajax Systems product
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Suitable for Australian and New Zealand commercial and residential installations
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Professionally supported through authorised Ajax distribution channels
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Advanced encrypted Fibra communication technology
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Designed for long cable runs up to 2,000 metres
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Manufacturer-backed 24-month warranty
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Technical support provided through authorised Ajax partners
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Ideal for high-reliability professional security projects
FAQs
What does AJAX#30852 Superior DoorProtect Fibra detect?
AJAX#30852 detects the opening of doors, windows, roller shutters, cabinets, and other access points using dual reed-switch technology.
Is AJAX#30852 Superior DoorProtect Fibra compatible with Ajax Fibra systems?
Yes. AJAX#30852 is designed specifically for Ajax Fibra wired security systems.
What is the maximum communication distance of AJAX#30852?
AJAX#30852 supports Fibra communication distances of up to 2,000 metres when installed with suitable U/UTP Cat5 cable.
Can AJAX#30852 connect to third-party detectors?
Yes. AJAX#30852 supports connection of third-party wired detectors using a normally closed (NC) contact.
Does AJAX#30852 include tamper protection?
Yes. AJAX#30852 features built-in tamper protection and device authentication to prevent sabotage and spoofing attempts.
Is AJAX#30852 suitable for outdoor installation?
No. AJAX#30852 Superior DoorProtect Fibra is designed for indoor use only.
What warranty is included with AJAX#30852?
AJAX#30852 includes a 24-month manufacturer warranty.
Can AJAX#30852 be installed on either side of a door or window?
Yes. AJAX#30852 allows magnet installation on either the left or right side of the detector.
Does AJAX#30852 support remote configuration?
Yes. AJAX#30852 can be remotely configured and managed through Ajax security applications.
Why choose AJAX#30852 Superior DoorProtect Fibra?
AJAX#30852 provides professional-grade perimeter security with encrypted Fibra communication, tamper protection, low power consumption, and seamless integration into Ajax security systems.