Description
Hardening your property’s entry points, the AJAX Spare Bracket for DoorProtect (AJA-9521) provides immediate notification of door or window intrusion for Ajax systems.
Engineered with EN50131 Grade 2 capability, the AJAX Spare Bracket for DoorProtect (AJA-9521) (AJA-9521) offers precision-focused performance for the Ajax security ecosystem. This unit is designed to meet the rigorous demands of modern security installations.
Professional Features
- Compact footprint
- Pre-installed CR123A or equivalent battery
- For DoorProtect
- Material: Plastic
- Colour: White
- 1 x AJAX Spare Bracket for DoorProtect (AJA-9521)
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Instant alert notification
- Requires precise alignment of magnet
Technical Specifications
| Brand | Ajax |
| Product SKU | AJA-9521 |
| Security Certification | Grade 2 |
| Connectivity Type | Wired |
| Application | Residential / Commercial |
Note: Ensure compatibility with your Ajax control panel before installation. For technical advice, consult our installation guides.
Expert Analysis
This Ajax component is the preferred choice for installers requiring zero-latency response and industry-standard Grade certification.
Why buy from our professional collection EE?
As an official UK stockist, we provide 24-month warranties on all professional hardware. Our technical team is available to support your installation with expert guidance on system configuration.
Recommended Use Case
Ideally suited for primary entry points including front doors, patio sliders, and vulnerable ground-floor windows.
What’s in the Box?
- Compact footprint
- Pre-installed CR123A or equivalent battery
- For DoorProtect
- Material: Plastic
- Colour: White
- 1 x AJAX Spare Bracket for DoorProtect (AJA-9521)
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Instant alert notification
- Requires precise alignment of magnet
Advanced Technology: Utilizes the proprietary Jeweller radio protocol for secure, long-range communication of up to 2,000 meters in open space.
Aesthetic Finish: Standard
Expert Verdict
- Compact footprint
- Pre-installed CR123A or equivalent battery
- For DoorProtect
- Material: Plastic
- Colour: White
- 1 x AJAX Spare Bracket for DoorProtect (AJA-9521)
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Instant alert notification
- Requires precise alignment of magnet
- Compact footprint
- Pre-installed CR123A or equivalent battery
- For DoorProtect
- Material: Plastic
- Colour: White
- 1 x AJAX Spare Bracket for DoorProtect (AJA-9521)
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Instant alert notification
- Requires precise alignment of magnet
Explore our wider range of integrated security panels to complete your installation.
Technical Overview
| Brand | Ajax |
| System Type | Wireless |
| Compatibility | Ajax |
| Detection Type | PIR |
| Location | Indoor |










