Official recall record
Bull and cygnus fire alarm detection system fads
- Issuing authority
- OPSS (UK)
- Alert date
- 2026-08-12
- Country of alert
- United Kingdom
- Alert level
- Product Recall
- Alert type
- product-recall
- Brand on record
- ‘Bull’ and ‘Cygnus’
What the authority reported
A manufacturing defect in the network control unit (NCU) may cause a loss of communication between devices within the fire alarm system and the control and indicating equipment (CIE). During an outage, the system may fail to process or respond to alarm inputs. This could result in delayed fire detection or alarm activation, increasing the risk of injury or loss of life in the event of a fire. Affected products do not meet the requirements of Regulation 305/2011 as it applies in GB. The defect is confined to a single batch of NCUs (batch reference 2410). Not all units in the batch are affected. Any loss of communication is indicated on the fire alarm panel via visual and audible fault indicators, meaning an outage is readily identifiable. The majority of outages are of short duration and self-correcting without user intervention.
What to do
Follow the instructions in the official notice — recall remedies (refund, repair, replacement, or disposal) are defined by the issuing authority and the responsible business, and they differ per recall. Do not rely on summaries, including this one.
Record last checked against the registry on 2026-08-16.