6 1/2" Dia. High-Output Strobe Lights with LED Indicator Selectable flash pattern with LED diagnostics. 10 Customer selectable flash patterns. Low current draw. Durable polycarbonate, twist-off lens. Features a durable polycarbonate, universal flange base. Completely encapsulated circuit for increased weather and shock resistance. Mounting options: Permanent or flange mount 1€ NPT pipe.