1. Accuracy: 1%2 words 2. Range: AC voltage: AC 400-3000V or AC 2000-4500V (You should select one type of the meter in your order) The measuring range 40-300V without limitation, and it can be used in grid , photovoltaic and inverter current 250-450V only can use for 380V AC Current:AC 0-1000A, the current resolution is 001A. Frequence: 450Hz - 650Hz Factor: 000-100PF Electric : 0-450000W, the electric resolution is 01W when measure electric between 0-99999W, otherwise the electric resolution is 1W. Electric Energy: 0-99999kwh, the display of electric energy resolution is 001kwh when measure electric engery between 0-99999kwh, the display of electric energy resolution is 01kwh when measure electric engery between 10000-99999kwh and the display of electric energy resolution is 1kwh when measure electric engery larger than 99999kwh 3. Speed: 2 times per second Attention: The meter can only use for measure 45-65Hz AC city electricity. Style: AC40-300V size:54x80x64mm Material:Plastic + Metal colour:Grey Package Contents: 1 * Meter Built-in Current former Only the above package content, other products are not included. Note: Light 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.