... 480*134*420mm Technology parameter:4800W,220V Type:instant heat machine Features: 1.Spring,Summer,Fall and Winter four gears ... any leakage current, the water heater will automatically cut off the power within seconds. 6.Overpressure protection 7.Automatic ... 8.Imported stainless steel Inner container 9.Automatic turn on/ off machine functions 10.System self-check function water heater BLK30-18D ...