Lunasea G4 10 Back Pin LED Light Bulb - 12VAC or 10-30VDC/2W/140 Lumens - Warm WhiteG4 10 LED Back Pin Light G4 utilizes High Power LEDs for more than enough light to read and work by. As with all our replacement bulbs the G4 includes a built in Buck Regulator making it the most robust on the market today and produces little heat. High Power Low Heat Larger size brings larger light No Fire Hazard like that of Halogens Super Bright Up to 50,000 Hours 10V 30VDC 12 VAC G4 uses high power LEDs to provide enough light for reading and use.