AC Current:AC 0-100A, the current resolution is 0.01A .Frequence: 45.0Hz - 65.0Hz Factor: 0.00-1.00PFElectric : 0-450000W, the electric resolution is 0.1W when measure electric between 0-9999.9W, otherwise the electric resolution is 1W.Electric Energy: 0-99999kwh, the display of electric energy resolution is 0.01kwh when measure electric engery between 0-999.99kwh, the display of electric energy resolution is 0.1kwh when measure electric engery between 1000.0-9999.9kwh and the display of electric energy resolution is 1kwh when measure electric engery larger than 9999.9kwhOperating Temperature: NormalModel Number: D52-2066Accuracy: 1%2 wordsSpeed: 2 times per secondSize: 54 x 80 x 64MMInstallation: Din-RailAC voltage:AC 250-450V only can use for 380Vcolor:WhiteMaterial:plasticPackage Contents:1 x Watt-hour meterOnly 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.