Features: 1. Other electrical appliances with terminals can be used. 2. With green LED indicator, about 2mA current is almost dead. 3. RVB 2 X 1.5 square red and black wire, the red wire is the positive electrode and the black wire is the negative electrode. 4. The cigarette lighter plug has been soldered with a soldering iron, plug and play. 5. After the cold nose pliers press the wire, the solder is welded, which is firm and reliable, and will never fall off. 6. A standard piece for almost all models of cigarette lighter sockets.