... DT1Power supply: AC 220V±10%, 50HzEmergency power supply: 3.7V, 600mAh lithium battery,Light source: super high light LEDSwitching time: ... temperature: -10°C~55°C rechargeable fire emergency light Verified Information This information is Verified by Bureau ... Automizing Fighting System, Extinguisher, Firefighting Siameme Connection, Firefighting Emergency Light, Manual Fire Alarm) 2009/09/26 --- 2012/09 ...