... as :GB/T2820,ISO8528,IEC34,VDE0875-NRated Power: 12kwRated voltage:400/230v, 440/254v, 220/127v, etc.Phase/ ... ,oil level indicator, emergency button,preheating button, battery voltage gauge, hours running counter for protection and transfer.2 ... controller, indicating lamp, transfer switch,etc.. Automatic transfer switch (ATS) uses update technology, which can be automatic control for on-off electricity ...