Compatibility: Designed for I7, E5, I3, and I4 models. Directly replaces or supplements the original component without modifying your vacuum. Reliable infrared docking: Uses builtin infrared sensing to detect the charging base's infrared signal. Guides the vacuum accurately toward the base so it docks and charges automatically. Prevents unexpected shutdowns: By improving the vacuum's ability to find its charging base, it reduces the risk of the robot running out of power away from the dock and increases successful autonomous operation. Durable construction: Made from quality materials for longlasting durability and stable performance during repeated docking cycles. Easy integration: Fits the listed models and works with the factory charging system to restore reliable autodocking behavior. Practical use scenarios: Scheduled cleaning across multiple rooms: After completing a cleaning run, the vacuum uses the infrared guide to to the charger and recharge before the next scheduled job. Long cleaning sessions or large areas: When the battery gets low midclean, the vacuum can accurately locate the charging base and dock to avoid stopping in the middle of a room. Busy households or unattended operation: For users who rely on unattended cleaning, improved docking reliability ensures the vacuum stays powered and ready without manual intervention. What you get: A durable, modelcompatible part that restores or improves automatic docking performance by accurately detecting and following the charging base's infrared signal.