The Lithonia Lighting LHQM-LED-R-M6 LED Emergency Exit Sign Head Lamp is a high-quality and reliable emergency lighting solution. With a voltage range of 120/277V and two lamps included, this unit ensures that your emergency exit signs are always illuminated in case of emergencies. The extra cover provided adds an extra layer of protection and durability to the product. Made in the United States by Lithonia Lighting, a trusted brand in electrical equipment and supplies, this LED emergency exit sign head lamp is a valuable addition to any business or industrial setting.