fire emergency exit 1.Input voltage:AC220V 2.Power:<3W 3.Emergency time:>90min 4.Light source:HB LED(made in Taiwan) fire emergency exit1,full fire-resistant material,constant current charge2,constant current charge,fault over-charge and over-discharge prote3,long-life non corrosive battery4,easy to be maintained,convenient to operate,safe and reliable fire emergency exit