SMAKN&reg; GREEN 3 Wires 0.36" Voltmeter 4 Digit with Shell 0-33.00v 3 Wires Voltage Measure Range: DC 0-33.00V Power Supply: DC 3.5-30V Dimensions:48mm x 29mm x 22mm Cutting Size: 45mm x 26mm Display: four 0.36" digital LED tube