Two-wire DC voltage meter head 0.56 inch LED digital voltmeter BLUE

A tiny potentiometer allows for precise adjustments, and the device's decimal point moves automatically. There are just two wires to connect—the black to negative and the red to positive. This makes connecting the wires simple. Even when connected in reverse, the device won't burn and the screen won't show anything thanks to reverse connection protection. It is well-made, has a large screen and bright LED display, and is shielded from external force by a sturdy plastic shell. It's ideal for checking the battery life of solar-powered devices like cars, trailers, motors, and so forth.