Aobao 2pcs Plug in Volt Meter, Flat US Plug AC 80-300V LCD Digital Voltmeter Voltage Test Monitor AC 110V 220V Voltage Meter for Household Plug into Outlet to Measure Voltage

?Wide Measuring Range and Low Consumption?Plug-in voltage monitor Measuring range: AC80-300V, Consume Power: Less than 1W(about every 1200hours consume 1 kilowatt-hour).
?Household Appliances Protecting?Built in quality lcd digital display with blue back light, this voltage monitor is convenient for you to view the data on it even in night, this test can immediately detect and measure the current voltage by connecting to the switch plug or the other kind of wall socket, it allows you to check on power health of devices for preventing the low voltage damage to your household appliances
?Adjustable Potentiometer?Theres an interior potentiometer for accuracy adjustment. Just use screwdriver to open the outer case and adjust the potentiometer with small size screw driver. Adjust the potentiometer counter-clockwise when its excessive voltage; if the displayed voltage is too low, adjust the potentiometer clockwise.
?Versatile Feature?Designed as a flat plug, the volt meter is for more than just measuring voltage. It can be also used as a voltage meter as well as a night light. It is ideally applicable to measuring the AC voltage in family, office space, industrial and mining enterprises, etc.
?Package Includes?2pcs voltage test meters. (Please keep the kids away from the product, do not use the product in a damp environment.)
Included components: AC Volt Meter