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Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299)
£67.99 inc. VAT
Official Ajax Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299) with White EN50131 Grade 2 features. Ready for same-day UK dispatch for professional security systems.
Description
Providing a visual and audible frontline deterrent, the Ajax Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299) warns off intruders before they can breach the property.
Featuring White EN50131 Grade 2 technology, the Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299) is a critical component of the Ajax platform, delivering immediate detection and low-latency system communication.
Professional Features
- 1 x Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299)
- Secure Jeweller communication with encryption, authentication, and jamming detection up to 2000 m range
- Up to 5 years of operation on pre installed CR123A batteries with tamper protection
- Easy installation with SmartBracket and full compliance with UK and European standards
- Pre-installed CR123A or equivalent battery
- Adjustable sound volume from 80 to 105 dB and customizable alarm duration
- Built in LED indicator with optional external LED connection
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Powerful visual deterrent
- Weather-resistant housing
- May require high-level mounting for maximum reach
Technical Specifications
| Brand | Ajax |
| Product SKU | AJA-121299 |
| Security Certification | Grade 2 |
| Connectivity Type | Wireless |
| Application | Residential / Commercial |
Note: Ensure compatibility with your Ajax control panel before installation. For technical advice, consult our installation guides.
Finished in a professional Alpine White, this unit is designed to blend seamlessly into residential ceilings and light-colored commercial walls.
Expert Analysis
The AJA-121299 model represents the latest in Ajax’s security roadmap, offering improved battery life and encrypted signal protocols.
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
Acts as a powerful visual and audible deterrent for the exterior of your property, alerting neighbors and warding off intruders before they enter.
Pro Tip: Test the signal strength using the system app before final mounting.
What’s in the Box?
- 1 x Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299)
- Secure Jeweller communication with encryption, authentication, and jamming detection up to 2000 m range
- Up to 5 years of operation on pre installed CR123A batteries with tamper protection
- Easy installation with SmartBracket and full compliance with UK and European standards
- Pre-installed CR123A or equivalent battery
- Adjustable sound volume from 80 to 105 dB and customizable alarm duration
- Built in LED indicator with optional external LED connection
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Powerful visual deterrent
- Weather-resistant housing
- May require high-level mounting for maximum reach
Advanced Technology: Utilizes the proprietary Jeweller radio protocol for secure, long-range communication of up to 2,000 meters in open space.
Aesthetic Finish: Alpine White
Expert Verdict
✓ Pros:
- 1 x Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299)
- Secure Jeweller communication with encryption, authentication, and jamming detection up to 2000 m range
- Up to 5 years of operation on pre installed CR123A batteries with tamper protection
- Easy installation with SmartBracket and full compliance with UK and European standards
- Pre-installed CR123A or equivalent battery
- Adjustable sound volume from 80 to 105 dB and customizable alarm duration
- Built in LED indicator with optional external LED connection
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Powerful visual deterrent
- Weather-resistant housing
- May require high-level mounting for maximum reach
⚠ Considerations:
- 1 x Ajax HomeSiren U Wireless Internal Sounder – White (AJA-121299)
- Secure Jeweller communication with encryption, authentication, and jamming detection up to 2000 m range
- Up to 5 years of operation on pre installed CR123A batteries with tamper protection
- Easy installation with SmartBracket and full compliance with UK and European standards
- Pre-installed CR123A or equivalent battery
- Adjustable sound volume from 80 to 105 dB and customizable alarm duration
- Built in LED indicator with optional external LED connection
- Mounting Kit (Screws & Wall Plugs)
- Quick Start Installation Guide
- Powerful visual deterrent
- Weather-resistant housing
- May require high-level mounting for maximum reach
Explore our wider range of low-voltage security cables to complete your installation.
Technical Overview
| Brand | Ajax |
| System Type | Wireless |
| Compatibility | Ajax |
| Location | Indoor |
Additional information
| Brand | Ajax |
|---|---|
| System Type | Wireless |
| Compatibility | Ajax |
| Location | Indoor |