Linkstyle Battery Voltage Gauge, DC 24V 12V Volt Meter, Digital Display Meter 12V, Waterproof Voltmeter with Touch Switch

2-in-1 Function: Car voltmeter monitors DC 5–48V voltage and 0–100% battery capacity in real time with ±0.1% accuracy, preventing battery failure or unexpected power outages Safety Protection: 12V battery monitor includes a built-in 10A fuse to protect against overload, short circuit, overcurrent and reverse polarity, with reliable operation from –20°C to 60°C Touch Switch: Press and hold for 5 seconds to turn the 12 volt meter on/off; press for 1 second to switch between voltage and battery level display. Turn off when not in use to save power Easy to Install: LED digital voltmeter fits a 30mm mounting hole and can be installed with or without the faceplate. Secure with the lock nut; connect red to positive and black to negative Wide Application: Waterproof voltmeter is suitable for 12V 24V 36V battery systems, including cars, boats, motorcycles, RVs, SUVs, trucks, tractors, outdoor battery, golf carts and more