Femitu Waterproof Voltmeter Monitor DC 4.5-150V 12/24/36/48v Volt Battery Meter Voltage Tester Automative Electric Cars Gauge Small Digital Voltmeter 0.56"led Red
package includes:1x Digital Voltmeter
Dimensions: 1.96"X 1.18" X1.06"
Cutting Size: 1.81"X1.06"
Safe to use: with reversed connection protection, it will not be burnt even when connected reversely, but the screen display nothing.