A product recall has been issued for certain Bull and Cygnus wireless Fire Alarm Detection Systems (FADS) after a manufacturing defect was identified that could affect the performance of fire alarm control equipment. The recall was announced by the Office for Product Safety and Standards (OPSS) on 12 August 2026. [gov.uk], [fia.uk.com]
The issue relates to a specific batch of Network Control Units (NCUs) used within affected fire alarm systems. Investigators found that the defect could cause a temporary loss of communication between devices and the control and indicating equipment (CIE). In certain circumstances, this could lead to delayed fire detection or alarm activation, potentially increasing the risk of injury or loss of life in the event of a fire. [gov.uk], [fia.uk.com]
The recall is limited to a single batch of NCUs, identified by batch reference 2410, and does not affect all Bull or Cygnus fire alarm products. The affected systems include selected Cygnus SmartNet Pro, SmartNet 100, and Bull SiteNet control panels manufactured within specific date ranges. [gov.uk], [bromley.gov.uk]
In response, Bull Products and Cygnus Group have withdrawn affected products from the market, quarantined remaining stock and launched a replacement programme for all impacted units, including those that have not experienced faults. The companies have used their product traceability systems to identify and contact affected customers directly. [fia.uk.com], [cygnus-systems.com]
While the fault is reported to be readily identifiable through visual and audible fault indicators on the control panel, responsible persons, fire risk assessors and building managers are advised to review whether temporary safety measures are required until replacement work has been completed. Enhanced testing procedures and a redesigned NCU board have also been introduced to prevent recurrence. [fia.uk.com], [recallsathome.com]
The recall serves as an important reminder of the need for regular fire system inspections, prompt action on fault notifications and effective maintenance of life-safety systems that protect occupants in workplaces, construction sites and residential buildings. [gov.uk], [fia.uk.com]
Shareable takeaway:
Fire alarm systems are critical life-safety equipment. If your building uses Bull or Cygnus wireless fire alarm systems, check whether your equipment is affected by the recall and ensure any required replacements are completed promptly. Even temporary communication faults can have serious consequences during a fire emergency. [gov.uk], [fia.uk.com]
