AddSecure has unveiled a new device which meets new fire alarm signalling standards.
The NGP Advanced Extra DP4 is a dual-path signalling device which complies with new standards in the UK.
Signalling device for new compliance
As a new addition to its NGP Advanced range, the device delivers DP4-grade dual-path signalling over LAN and 4G with dual SIM capability.
Under the updated BS 5839-1:2025 code of practice, alarm transmission equipment must meet strict performance criteria to ensure reliable and timely summoning of the fire and rescue services.
For Category L systems, dual-path alarm signalling is required, single-path failures must reach the Alarm Receiving Centre (ARC) within 90 seconds, and any catastrophic failure, a loss of both signalling paths, must be indicated at both the ARC and the Control and Indicating Equipment within three minutes.
These requirements correspond to DP4-grade for alarm signalling.
Resilient dual-path alarm signalling
The Advanced Extra DP4 fully complies with these requirements. It provides 90-second single-path failure reporting, with step-up reporting on the secondary path when the primary path fails, alongside three-minute catastrophic failure indication
Nicholas Whiting, VP Alarm Signalling, AddSecure UK, said: “The launch of NGP Advanced Extra DP4 reflects AddSecure’s commitment to supporting the industry through critical changes such as the PSTN switch-off and the move to IP networks.
“By meeting the latest BS 5839-1:2025 requirements and offering dual-path resilience, this solution ensures life safety systems remain reliable and compliant.
“Installers can trust that Advanced Extra DP4 combines robust performance with third-party certification through the Loss Prevention Certification Board (LPCB), our BSI Kitemark and ISO 27001 certification for advanced cyber security standards.”
