Ensure your iRobot S9 operates at peak performance with our replacement cliff sensors. These sensors are essential for preventing your vacuum from falling off stairs and ledges. Manufactured with precision, these parts help maintain the safety and efficiency of your device. Easy to install and designed specifically for the iRobot S9 model, these accessories are ideal for maintaining your robot vacuum's functionality and extending its lifespan. Keep your vacuum navigating smoothly and safely with these essential sensors. Due to different production batches, there may be slight variations in product appearance and printed text, which do not affect performance. Color: As shown Material: ABS Package Contents: 1 Set * Cliff Sensor Note: Only the items listed above are included. Other products are not included. Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.