HIGH PERFORMANCE POWER METER: 4 in 1 power meter let you easily know voltage, current, power, electricity of home power. The voltage range of the volt meter & amphere meter is AC 50-300V, the current range is 0-100A, the active power range is 0-30kW, and the energy range is 0-1999kWh.NON CONTACT DESIGN, SAFE TO USE: Energy meter with built in CT screwfree connector, reducing heating or poor contact, improving accuracy and safety.PREMIUM MATERIAL: Digital voltmeter with crafted with premium PC flame retardant material, high temperature resistance, safer to use.EASY INSTALLATION: Digital voltage meter suitable for 35mm DIN rail mounting. Suitable for most power. LCD backlight design, eventhough in dark power box, you can also clearly read the data.WIDE APPLICATION: The DIN rail mounted power meter can be used in office, school, market, home, industry, laboratory and other fields. Attention: This digital voltmeter can only use to measure 50/60HZ AC electricity . No used to measure square waves, output of inverter, or non-standard sine waves.