Knightsbridge: BATSCWST6, 230V LED Batten Light, CCT Adjustable, 6ft, 27/52W, 4,170lm/7,520lm, Emergency Self-TestKey Features: CCT adjustable (3000K, 4000K, 5700K) Wattage adjustable (27 52W) High efficiency LED technology for superior performance This CCT and wattage adjustable LED batten light is designed to replace conventional fluorescent fixtures with ease, providing an ultra efficient lighting solution that is ideal for commercial use. The self test feature ensures automatic function and duration tests, ensuring reliability.