Six in One Function: The digital counter display shows a total of 6 parameters, including voltage: 40-300V, current: 0-100A, power: 0-30000W, energy: 0-99999kWh, frequency : 45-65Hz and power factor: 0-1PF. More accurate: The internal use of high-precision chips is more accurate and sensitive. The shell is made of high-strength, flame-retardant ABS material, which ensures safety and is more durable. More intuitive: The high-resolution backlit LCD color display makes it easy to read data. 178 no dead angle, enough brightness at night, and it will not be difficult to read during the day due to reflections. Wide range of applications: This digital meter is suitable for most scenarios where DIN rail is used be it in schools, markets, home appliances, industry, etc. Note: Can only be used to measure 50/60Hz AC current in cities. Simple and easy to use: Located on the surface There is a reset button in blue. If you need to measure multiple data, you only need to press and hold for 5 seconds to reset. The electric energy value and accumulated electric energy are automatically saved when the power supply is cut off. The data will continue to accumulate when the measured voltage is reconnected.