About this item 6 in 1 MultimeterConnect the product to an external mutual inductor to detect and display voltage, current, active power, battery power, frequency and power factor. Auto Store The display can automatically store data. Long press the button for 5 seconds without operation, it will exit and save the data; when the power is cut off, the data is also saved automatically. Clear DisplayThe P06S-100 display instrument has a full-view LCD display, which can be controlled by the backlight. Short press to turn on/off the backlight. No matter where you are, you can see clearly Alarm functionYou can set the overload power by yourself (the default is 4.4KW). When the actual power exceeds the preset value, the backlight flashes and an alarm sounds. Wide UseThe product supports 50/60HZ frequency and can be connected to power source testing .power, voltage, current and others. It can be used as ammeter, digital voltmeter, wattmeter, battery capacity monitor