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. Automatic storage The display can automatically store data. Press and hold the button for 5 seconds without operation, it will exit and save data; when the power is cut off, the data is also saved automatically. Display clearlyThe P06S-100 display instrument has a full-view LCD display, which can be controlled by retro -lighting. Short press to turn on/off the backlight. No matter where you are, you can see clearly Alarming 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 UsageThe product is compatible with 50/60HZ frequency and can be connected to power supply testing, voltage, current and others. Can be used as ammeter, digital voltmeter, wattmeter, battery capacity monitor