Monitor DC voltage between 5V and 120V with this simple 2-wire voltmeter
±1% tolerance Working current: <23mA Refresh rate: 300ms Reverse polarity protection
Auto ranging 0.1V precision
Size: 48x29x22mm Hole size: 46x27mm
Operating Temp: -20 - 65 DC only, not for use with AC Voltage above 132V will damage the unit