1. Ectrical parameter measurement function (voltage, current, active , energy).2. Overload alarm function (over alarm thresholdthepower flash).3. alarm threshold preset function (can set alarm threshold).4.The reset function of energy key.5. Store data when off (store the accumulated energy before off).6. red digital display function (display voltage, current, active , energy).7. Serial communication function (with TTL serial interface itself, can communicate with a variety of terminal through the pin board, read and set the parameters).DISPLAY FORMAT1. : Test Range: 0 ~ 22kWWithin 0 ~ 10kW, the display format is 0.000 ~ 9.999;Within 10 ~ 22kW, the display format is 10.00 ~ 22.00.2. Energy: Test Range: 0 ~ 9999kWhWithin 0 ~ 10kWh, the display format is 0.000 ~ 9.999;Within 10 ~ 100kWh, the display format is 10.00 ~ 99.99;Within 100 ~ 1000kWh, the display format is 100.0 ~ 999.9;1000 ~ 9999kWh and above, the display format is 1000 ~ 9999.3. Voltage: Test Range: 80 ~ 260VACDisplay Format is 110.0 ~ 220.0.4. Current: Test Range: 0 ~ 100ADisplay Format is 00.00 ~ 99.99.Colour:Photo ColorMaterial:plasticPackage Contents:1 x Monitor1 x Coil CTOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.