Simple installation allows you to mount the LITEceiver in seconds. The rechargeable battery will last all day (8 to 12 hrs) and can be hardwired for longer events. Get - Green, Yellow, White, Red and Checkered Flags - Instantly. There is NO LIMIT on the number of vehicles using the system and it is all controlled with a touch of a button. Flags set from Race Control are received immediately and shown on ALL LITEceivers.