1. Ectrical parameter measurement function (voltage, current, active power, energy). 2. Overload alarm function (over power alarm thresholdthepower flash). 3. Power alarm preset function (can set power alarm ). 4.The reset function of energy key. 5. data when power off ( the accumulated energy power off). 6. Bright red digital display function (display voltage, current, active power, energy). 7. Serial communication function (with TTL serial interface itself, can communicate with a of terminal through the pin board, read and set the parameters). DISPLAY 1. Power: Test Range: 0 ~ 22kW Within 0 ~ 10kW, the display is 0.000 ~ 9.999; Within 10 ~ 22kW, the display is 10.00 ~ 22.00. 2. Energy: Test Range: 0 ~ 9999kWh Within 0 ~ 10kWh, the display is 0.000 ~ 9.999; Within 10 ~ 100kWh, the display is 10.00 ~ 99.99; Within 100 ~ 1000kWh, the display is 100.0 ~ 999.9; 1000 ~ 9999kWh and above, the display is 1000 ~ 9999. 3. Voltage: Test Range: 80 ~ 260VAC Display is 110.0 ~ 220.0. 4. Current: Test Range: 0 ~ 100A Display is 00.00 ~ 99.99. Colour:Photo Color Material:plastic Package Contents: 1 Monitor 1 x Coil CT Only 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.