[Compatibility]: This battery disconnect switch is designed for top terminal and negative terminal battery applications. Suitable for use in cars, trucks, buses, RVs, boats, and trailers. [Easy to Install]: This knob-type battery switch is simple to install and operate. [Power Saving]: This blade-type main switch provides battery isolation and protects electrical systems by cutting off power consumption when the vehicle or vessel is not in use. Helps prevent battery drain, theft, and unauthorized use. Ideal for agricultural vehicles, buses, trucks, tractors, and motorhomes. Versatile use as a power switch for added electrical equipment inside and outside the vehicle, such as flashing lights, chassis lights, dome lights, ceiling lights, and instant power-off devices. Product Name: Automobile Negative Power-Off Switch Note: Label design may vary slightly between batches. Actual product may differ slightly from image, but functionality remains unchanged. Voltage: 12V/24V Color: As shown in photo Material: Plastic + Copper Package Contents: 1 x Car Battery Power-Off Switch (Other accessories not included) Note: Lighting and display differences may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3 cm.