by Eleasha Hylton-Rowe | June 13, 2025
Intruder alarms are one of the most effective deterrents against unauthorised access and burglary. The external bell box, in particular, plays a key role – both as a visual warning and an audible alert. Pyronix, a long-standing leader in security innovation, has now introduced updates to its Deltabell range of sounders, streamlining installation and boosting performance across the board.
The Pyronix Deltabell is a high-spec external sounder, designed for both residential and commercial use. With recent updates across the range, these units now offer improved deterrence, easier installation, and compliance with security standards. The enhancements help ensure both functional protection and professional presentation – without adding complexity to the setup.
Backlit Cover & Flashing LED:
The new illuminated design makes the Deltabell highly visible at night, reinforcing its presence as a deterrent. Integrated light-dependent resistors (LDRs) manage brightness automatically, helping preserve power during daylight hours.
Simplified Installation:
A built-in spirit level and rotating drill guide holes allow for level, accurate mounting in less time – ideal for engineers and property owners who value efficiency.
Multi-point Tamper Protection:
The bell box includes three-way tamper detection for lid removal, wall tampering, and power interference, ensuring any breach attempt is immediately recognised and logged.
Battery Backup:
Each unit is equipped with a long-lasting NiMH battery backup, offering 2–5 years of reliable emergency operation in the event of power failure.
Loud Output & Auto Cut-Off:
A 104dBA sounder delivers a powerful audible warning, with a 15-minute cut-off feature that meets regulatory standards for alarm duration.
As part of this product refresh, Pyronix has introduced more sustainable design practices into the Deltabell range. From streamlined packaging that reduces waste to more energy-efficient internal components, these updates help minimise environmental impact. The improved power management features also contribute to longer battery life and lower energy consumption – small changes with a larger collective impact.
While internal sensors detect threats, the external bell box serves as your building’s first line of defence – clearly broadcasting that a professionally installed security system is in place. With enhanced lighting and a modern design, the updated Deltabell doesn’t just perform well – it looks the part, too.
The upgraded Deltabell range includes models rated to Grade 2 and Grade 3 EN50131 standards, making them suitable for both general use and higher-risk environments. These ratings ensure compliance with professional benchmarks for tamper protection, performance, and reliability.
APS Security is a trusted distributor and accredited installer of Pyronix systems, with years of experience integrating their products into homes, offices, and commercial spaces. Our close relationship with Pyronix ensures we stay up to date with product developments and best practices – so you benefit from both the latest technology and expert advice. We bring deep product knowledge and hands-on experience in designing and installing effective alarm systems. Furthermore, work closely with our clients to ensure each installation meets the specific needs of the site – whether it’s a single home or a multi-site commercial portfolio.
What We Offer:
The latest Deltabell upgrades combine smarter design with stronger deterrence and better long-term efficiency. Whether you’re planning a new security system or updating an existing one, APS Security is here to help you get the most out of this new generation of external sounders.
Get in touch with our team to find out how the new Deltabell range can fit into your security strategy.
If you want to talk to us about an Access Control System for your building, contact us through our website, or give us a call. We can answer any questions you might have about Access Control Systems or any other aspects of security and fire safety products and procedures.
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