2PCS DC 12V 24V Voltage Meter, 4V-100V Battery Voltmeter Gauge, Car Voltage Gauge LED Digital Display for Car Boat Motorcycle Truck

Precision Accuracy: The battery voltage meter measures DC 4V-100V with ±0.2% accuracy. It ensures quick and precise vehicle battery voltage readings Reverse Connection Protection: The device is designed to prevent damage if the positive and negative poles are connected incorrectly. In this case, the display will not show, but the device will remain safe and intact Real-time Monitoring: Using a precise 3-digit LED digital display, you can easily and accurately obtain the battery voltage in real-time. Refresh rate: 300mS/time Compact Design: The 12V voltage gauge is mini-sized, saving space on your dashboard while providing accurate readings. The drill hole size is 1.18in/3cm, making installation quick and easy without occupying much room Wide Compatibility: The 12V voltage meter is widely compatible with cars, RVs, SUVs, off-road vehicles, boats, marine equipment, motorcycles, bikes, distribution automation systems, test equipment, and more