2pcs Wireless Universal Car Projection LED Projector Door Shadow Logo Light Welcome Lamps Courtesy Lights Kit Magnet Sensor Red Vampire Wireless Design. No more troubles of making holes; The dazzle logo light will display on the ground when you open the door and it will be turn off when you close the door,there is ON/OFF switch to mandatory control the light; Powered by 3 x AAA batteries ( Not included ),Size:6.5 x 6.3cm,Material:ABS,Working voltage:4.5v; Distance between the magnet and sensor area:light off below 2cm,light on over 2cm; Note: the actual base color of the picture is clear,which is depend on the projection area.