1. Easy to install and quick to change: the battery main switch for 12 V/24 V DC systems. On/Off 2 Positions Lightly turning the key from the battery isolator switch interrupts battery power in 1 second. It can only be removed in the off position. We recommend mounting on the negative battery pole. The battery disconnect switch prevents the battery from discharging when the vehicle is stationary, and interrupts power supply to prevent theft. 2. Long service life: battery switch made of strong, flameretardant ABS hard plastic. M8 pure copper clamp, stainless steel hex nuts for improved continuity. temperature resistance, rust resistance, durability, protection of the power supply from leakage, water, corrosion resistance for safe use. Quick disconnect with the car battery switch increases the life of the battery. Efficient protection for your vehicle against unnecessary power consumption. 3. Wide application: the killswitch switch is widely used for cars, vehicles, boats, yachts, caravans, caravans, caravans, caravans, trucks, battery banks and other 12V/48V devices. Can be used as a key to open various electrical devices, such as Troboscope, suspension and fog lights that are used both indoors and outdoors. Fast battery main switch 12V 24V, ideal for maintaining battery charge over time. 4. Comprehensive PackageThe battery disconnect switch set contains: 1 x M8 battery switch, 1 x waterproof cover, 2 x cutoff removable keys, 2 x copper terminals and 2 x insulator covers. Copper terminals can make your wiring easier. The insulation cover prevents you from touching the wires directly, which better protects your safety. The weather cap can better protect the keyhole from the erosion of dust and rain.