Voltage measurement range: 0~400V Voltage resolution: 0.1V Current measurement range: 1~300A Current resolution: 0.1A Relay: External (optional) Temperature measurement range: -20~120 Capacity display range: 0%~100% Power measurement range: 0~200kW Power resolution: 0.001W Amp-hour measurement range: 0~2000kAH Capacity resolution: 0.001AH Watt-hour measurement range: 0~4000kWH Watt-hour accuracy: 0.001WH Time measurement range: 0 ~ 99 days Time resolution: 1 second Communication channel range: A ~ Z (26 channels) Communication address range: 01~99 Voltage accuracy: 2% + 3 words Current accuracy: 5% + 10 words Sampling rate: 5 times / second Communication distance: up to 10 meters Measurement module power consumption: 0.4W Display module power consumption: 0.5W NCP: 0 ~ -300A (negative over-current protection setting) OCP: 0 ~ 300A (positive over-current protection setting) OVP: 0 ~ 400V (over-voltage protection setting) LVP: 0 ~ 400V (under-voltage protection setting) protection delay time: 0 ~ 10s Display size: 98*54*20.8mm Measuring module size: 113.2*57.2*48.8mm Weight: 480g Packing list: Display module*1 Measurement module*1 USB data cable*1 Temperature sensor*1 Manual*1 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store