Installation mode and connection mode: Open the 28mm round hole with the opener; + connected to the 12V DC power positive, "-" connected to the power supply negative.The wiring pin applies to the 6.3mm plug ring terminal.
Suitable for 12-24V cars, big trucks, trucks and other 24V car system, choose this more suitable
Built-in fuse, Built-in short circuit, over voltage, overload automatic protection
Car USB charger with mini size,stylish design, it can not resist
Personality spring waterproof cover, with LED blue indicator light
