Features: Adopt universal-standard guide rail installation, no screws required, buckle fixation, convenient installation. Adopts clear definition LCD-color screen, which can display a variety of content, such as detection of current voltage, current, power, electricitys, frequency, power factor, measurement data. Remote meter reading by cellphone, you can view the electricity consumption of tenants/daily-reports/monthly reports/annual reports through mobilephone-APP, real-time records-of-daily, monthly, annual electricity consumption, easy to know the destination of the electricity bill, so that electricity spending can be tracked. Active power: The measuring-range is 0-45000W, the display resolution between 0-9999.9W-is 0.1W, and the rest is 1W. Electric energy: the measuring-range is 0-99999kwh, and the minimum display resolution of 0-999.99kwh is 0.01kwh. Specifications: Material:Plastic Size: Approx.5.4x8x6.4cm/2.12x3.14x2.51inch Measuring range: AC-voltage: AC40.0-300.0V, (or AC250-450V). Ac-current: AC0100.0A, and current display resolution is 0.01A Power frequency: 45.0Hz-65.0Hz Power factor: 0.00-1.00PF The minimum display resolution of 1000-9999.9kwh is 0.1kwh. The minimum resolution of 10000-99999kwh is 1kwh. Measuring speed: about 2-times per second Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Current Power Meter