Features: brand new and high quality Electricity usage monitor: Monitor is the killer of the high-cost energy appliance, helping you lower power consumption and save money. AC power meter voltage measuring range is AC 50-300V, current measuring range is 0-100A, active power range is 0-30kW, electric energy range is 0-1999kWh. Wide viewing angle, color LCD screen, very clear. Built-in CT , Make wiring easier. This voltmeter ammeter is easy to instal and can be used indoor or outdoor in school, market, home, industry, laboratory and other fields. Specifications: Material: ABS Voltage Measuring Range : AC 50-300V Current Measuring Range: 0-100A Active Power Range: 0-30kW Electric Energy Range: 0-1999kWh Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Din Rail Wattmeter