Excellent Quality Anti-rust and corrosion-resistant, and protect the power supply from leakage and water ingress, durable and safe to use. Made of copper and durable plastic, it is waterproof, corrosion resistant, electrically conductive and has a long service life.Don't worry about a dead battery The battery isolation switch helps isolate and protect the electrical system, eliminating any vehicle or boat drawing power from the battery when not in use, safely disconnecting the battery. Quickly disconnect the circuit to prevent current leakage and battery loss, and prolong battery life.Wide range of applications If you have a lot of car appliances installed in your car (such as stereo/satellite/tv/etc), the car battery switch disconnect will be a good choice for you because it can effectively to charge you. Prevent leaks.Easy to Install You can easily install the battery switch on your vehicle without any special tools and in about an hour. The keys are ergonomically designed to fit the thumb perfectly and are easy to use.