(2-Pack) DC 100V 10A Voltmeter Ammeter LED Dual Volt Amp Meter Voltage Current Tester

Simultaneously monitor DC voltage up to 100V and current up to 10A Auto ranging 0.01V 0.01A precision • ±0.1% voltage tolerance • ±1% current tolerance • Working current: <20mA • Refresh rate: 300ms Size: 48x29x22mm • Hole size: 46x27mm • calibration potentiometers for both voltage and current Operating Temp: -10℃ - 65℃ • DC only, not for use with AC • 4-28V supply voltage Note: If the meter supply voltage (thin red wire) is the same as the load, then it must only be used with 4-28V or the meter may be damaged