Power frequency: 45.0Hz-65.0Hz Power factor: 0.00-1.00PF Active power: the measurement range is 0-45000W, the display resolution between 0-9999.9W is 0.1W, and the rest is 1W Electric energy: the measurement range is 0-99999kwh, the minimum display resolution of 0-999.99kwh is 0.01kwh 1000.0-9999.9kwh minimum display resolution is 0.1kwh, 10000-99999kwh minimum resolution is 1kwh Measurement speed: about 2 times per second According to the installation : rail type Dimensions: 54x80x64mm Colour:grey Material:plastic+metal Package Contents: 1 x Meter 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. D52-2066 rail-type digital display multi-function meter displays six parameters such as AC voltage, AC current, active power, power factor, frequency and electric energy simultaneously on the instrument. The display part of the instrument adopts a color full-view high-definition LCD screen. Measurement accuracy: 1%±2 digits Range: AC voltage: AC 40.0-300.0V AC current: AC0-100.0A, current display resolution is 0.01A