FF201-85-02 is a Industrial Flashing Filament Beacon made of UV stable ABS plastic base and polycarbonate lens. It is suitable for security, process control and industrial applications where a more robust and powerful signal is required. This beacon is of the flashing mode type (single stage alarm). Once the beacon is energised the internal electronics will cycle the Incandescent/halogen lamp through a 1Hz ON/OFF sequence. The design allows for termination inside the enclosure through the base. The 21W unit incorporates a Fresnel lens to maximise light intensity.