1.5 watt (3 LEDs x 0.50 watt) per head Unique all-inclusive lamp, reflector and lens assembly Dual 120/277 voltage Unique bi-color LED indicator light alerts occupant on battery condition (Green-normal, Red-check battery). Charge rate/power “ON” LED indicator light and push-to-test switch for mandated code compliance testing 3.6V long life, maintenance-free, rechargeable NiCd battery Internal solid-state transfer switch automatically connects the internal battery to LED lamp heads for minimum 90-minute emergency illumination Fully automatic solid-state, two rate charger initiates battery charging to recharge a discharged battery in 24 hours Universal knockout pattern on back plate for surface mount Suitable for wall or ceiling mount Knockout for conduit applications UL listed for damp locations (0°C – 50°C) Meets UL924, NFPA 101 Life Safety Code, NEC, OSHA, Local and State Codes Certified to CEC under title 20 regulations 5-Year Warranty Dimensions: 9-5/16"L x 2-7/8"W x 4-9/16"H