DI-9406 Addressable Flashing Beacon Base is installed in field to warn people for evacuation with audible and visual alarm in case of a confirmed fire. The flashing beacon base can communicate with fire alarm control panel (FACP) through a built-in microprocessor. On receiving a start command from the FACP, the microprocessor will control the buzzer to generate the pre-set fire alarm sound and light the bright LED.