active : 0-45000W when the active between 0 and 9999.9W, the display accuracy is 0.1W Electric energy: 0-9 99999kwh,when the electric between 0 and 999.99kwh, the display accuracy is 0.01kwh, when between 10000.0-9999.9kwh, the display accuracy is 0.1kwh,when between 10000.0 and 999999kwh, the display accuray is 1kwh. Installation Size: 76*39mm Auto-saving: when off, the electric energy will be saved. The saved electric energy will Be accumulated continue when the meter -on time. Range: AC voltage: AC 80.0-300.0V/200.0-450.0V(You should select the suitable type of meter when your making order) AC current: AC 0-99.99A, minimum resolution is 0.01A AC current: AC 0-40.00A, minimum resolution is 0.01A frequency: 45.0Hz-65.0Hz factor : 0.00-1.00PF Colour:black Material:ABS+ electronic components Size:79*43*48mm Package Contents: 1 x meter 1 x CT 1 x Instruction manual 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.