DROK 4 Digit Digital Voltmeter 0.56" DC 0-200V 12 Volt Blue LED Auto Voltage Measurement Gauges Measurment Range: DC 0 to 199.9V Power Supply: DC 7-30V Display: 4 digit 0.36" Blue LED Tube Accuracy: 0.1v Dimensions: 40.5mm x 24mm x 17.5mm;Cutting Size: 37.5mm x 21mm