SMAKN&reg; 0.56" 3 Wires BLUE DC 0-40v LED Panel Digital Display Voltage Meter Voltmeter Automatically Adjust the Precision Product Name : Digital Voltmeter Meter Module;Model : V27D;Measurement Range : DC0-40V Display Color : Blue;Cable Length : 19.5cm/ 7.7" Mounting Size : 45x 27mm/ 1.8" x 1.1"(L*W);Total Size : 48 x 28 x 22mm/ 1.9" x 1.1" x 0.9"(L*W*T) Material : Plastic, PCB, Iron;Main Color : Black Weight : 21g;Package Content : 1 x Digital Voltmeter Meter Module