LED Emergency Driver, Bulb Type LED, Battery Type Nickel Cadmium, Battery Capacity 3 Ah, Bulb Wattage 4 W, 47 3/4 in Bulb Length Supported, Emergency Illumination Time 90 min, Initial Light Output 500 lm, Driver Mounting Location Within Fixture, Emergency LED Array Shape Linear, Housing Material Steel, Input Current 0.07 A, Input Voltage 120/277 V AC, LED Fixture Array Intended LED Usage, 4 W Maximum Bulb Wattage, Number of Bulbs Supported 1, 122 Degrees F Maximum Operating Temperature WARNING: This product can expose you to chemicals including Cadmium, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -