Injection-Molded thermoplastic ABS housing UL 94V-0 flame rating Universal from 90VAC up to 300VAC free voltage operation Test switch and charge rate indicator 2*6V 5W DC T5 wedge base lamps for emergency mode Lead-calcium battery(6V4.5AH)delivers more than 90 mins capacity to emergency lamps 24 hours recharge after 90 minutes discharge Low voltage battery disconnection-preventing deep discharge damage to the battery