Features: Compatibility: This rotary battery disconnect switch is only suitable for the high and negative battery terminals. Maximum current: 500A, rated current: 100A. 6V 12V 24V batteries for cars, trucks, buses, RVs, boats and trailers Safety: This rotary battery disconnect switch is made of brass material, which is corrosion-resistant, has good conductivity, durable and safe to use Easy to Install: This button battery is easy to install and use. Switch raised 90> off state, switch lowered 90 degrees -> on state Power Saving Mode: This blade type master switch is used for battery isolation and electrical system protection, eliminating battery power consumption when the vehicle or vessel is not in use, preventing unnecessary battery drain and deterring theft or unauthorized use. Widely used: Widely used in batteries for cars, trucks, ships or RVs, it can also be used as a key for various electrical devices added inside and outside the car (such as turn signals, chassis lights, fog lights, roof lights, instant power outage devices, etc.) Specification: Size: 10x8x5cm/4x3x2inch As shown in the picture Weight: Approx. 150g Material: Orichalcumplastic Package 1x Off Switch