Hubbell Lighting Compass ECSEU1 Emergency Light Dual Voltage Input: 120/277 VAC, 60 Hz Sealed Lead Calcium 6-Volt 4.0 Ah battery with a maximum full recharge time of 24 hours Emergency Operation: Minimum 1-1/2 hours UL listed for use in Damp Locations Temperature Use: 32-Degree Fahrenheit minimum and 104-Degree Fahrenheit Maximum