You need to be seen while you are working and others need to see you - be visible at all times with Grote's line of incandescent and LED strobe lights. Product Features:Lamps mount in any orientation Lamps fit oval standard mounting holesRequires only a 12-Volt DC connection for powerPlug-and-Go terminals ensure a quick, easy connectionFunctions as either a dual flash strobe or a quad flash strobeCircuitry eliminates external power supply/control module needEncapsulant potting offers maximum protection of the circuit board against dirt, moisture and corrosion