TORCHSTAR LED Emergency Lighting, Commercial Emergency Lights with Battery Backup, UL Listed, Two Square Heads, AC 120/277V, Hardwired Emergency Exit Light Fixtures for Business, Pack of 4

Battery Backup: Comply with UL 924 Emergency Lighting and Exit Sign Regulations; built-in 3.6V 1000mAh rechargeable battery, more than 90mins continuous lighting for emergency after power failure, longer illumination, more reliable
Easy Installation: Surface mount via back plate, all the mounting hardware and accessories included in package, save the time and trouble of purchasing extra mounting parts
Ultra Brightness: With 12 high-grade LED chips per head, dual-head design brings high brightness for emergency, two voltage levels available, AC120V for general household lighting and AC277V for commercial or industrial lighting