The NBGRQWECZS Cliff Sensor Replacement is a critical component for your Homerun robot vacuum cleaner. This exact part is designed to be compatible with the following models: XU7100/01 XU7100/02 XU7000/01 XU7000/02. Its main function is to prevent the vacuum cleaner from crashing into walls or obstacles, ensuring a smooth and efficient cleaning experience. With superior build quality and precision engineering, the NBGRQWECZS Cliff Sensor Replacement will extend the lifespan of your vacuum cleaner and maintain its performance.