The T10 Emergency LED Tube Light is made of a combination of Aluminum & PC, this combination of materials ensures that the tube is both rugged and durable and provides good heat dissipation. With a length of 4FT, it is suitable for spaces with multiple lighting needs. Power is 15W (normal working power) / 5W (emergency lighting power), in emergency situation, the lamp will run at lower power to provide necessary lighting. In case of power failure, the lamp can continue to illuminate for 90 minutes, providing users with sufficient emergency lighting time. With three adjustable color temperatures of 3000/4000/5000K, users can adjust the color temperature of the lamp according to different lighting needs and environments to get the best lighting effect.