1. Accuracy: 1% 2 words 2. Range: AC Voltage: AC 40.0-300.0V or AC 200.0-450.0V (Select one meter type at the time of order) Measuring range 40-300V has no limitation and can be used in grid power, photovoltaic, and inverter current applications 250-450V range is only suitable for 380V systems AC Current: AC 0-100.0A, current resolution: 0.01A Frequency: 45.0Hz - 65.0Hz Power Factor: 0.00-1.00PF Electric Power: 0-450000W, power resolution is 0.1W when measuring between 0-9999.9W; resolution is 1W for values above Electric Energy: 0-99999kWh, energy display resolution is 0.01kWh for 0-999.99kWh, 0.1kWh for 1000.0-9999.9kWh, and 1kWh for values above 9999.9kWh 3. Measurement Speed: 2 times per second Note: This meter is designed only for measuring 45-65Hz AC electrical systems Style: AC40-300V Size: 54x80x64mm Material: Plastic + Metal Color: Grey Package Contents: 1 x Meter with Built-in Current Transformer Only the above items are included; other accessories are not included Note: Lighting and display differences may cause slight color variations between the image and actual product. Measurement tolerance: +/- 1-3cm