Numens is pleased to announce completion of LPCB and UKCA approval of our 447 series non-addressable audio/visual alarm devices and 641 series addressable audio/visual alarm devices  to EN 54-3.

For 447  series non-addressable alarm devices, activation is initiated upon connection of the operating voltage, allowing connection to either a switched supply at the control and indicating equipment, or via an output module.

641 alarm devices are loop-powered. Activation is initiated either by a dedicated initiation message from the control and indicating equipment, or optionally when the control and indicating equipment enters the Alarm Condition. Up to 32 devices can be connected to each alarm zone loop.

The range includes weather-proof models.