Features: The Battery Negative Wire Sensor can detect the abnormal electrical system of the vehicle in time, and automatically cut off the power supply once the voltage is abnormal or too low, effectively protecting the vehicle circuit and equipment from damage. With stable electronic control function, it can maintain reliable working state in various working environments and provide lasting protections effect. When the vehicle voltage is abnormal or too low, it will automatically cut off the power supply to avoid damage to other circuits and equipment due to voltage instability. Once the voltage returns to normal, it will automatically reconnected the power supply to ensure the normal operation of the vehicle. Made from high temperature resistant materials, which can work normally in high temperature environments and provide lasting protections. Specifications: Material: Metal Part Number: 2469069600 2469067901 Applicable Model: for W176 W246 CLA180 CLA200 CLA220 Package Includes: 1x Car Battery Negative Wire Sensor note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.