Using an integrated high-brightness low-light decline 30WLED, brightness up to 2400LM, equivalent to 90W normal lamp brightness. Single light down, the working life of up to 30,000 hours, voltage, and so do 220V/110V/12V/24V. Their own electricity only 35W, working temperature is below 30 degrees. are white. is mainly used for shops, supermarkets, exhibition halls, libraries, restaurants, and classrooms