10 flashing led module rvfm bsh 04m 10 a flashing led module with built in timer producing a multi coloured running light effect similar to that seen in disco light shows by arranging the leds around the pcb a large display can be created with minimal effort the module is activated by a push button switch mounted on the pcb and runs for approximately 10 to 15 seconds before automatically switching off rvfm 10 flashing led s pcb