Vktech DC 0-100V Voltmeter Ammeter 10A Red LED Panel Amp Digital Volt Gauge YB27VA 100% Brand new and high quality Operating voltage: DC 4.5 ~ 30V Measure current: 10A (direct measurement, built-in shunt) Mounting cutout: 45.5 x 26.5mm Dimensions: 48 x 29 x 21mm