The Roomba i Series Front Bumper Docking IR Sensor with Screws is a genuine iRobot accessory designed specifically for the Roomba e and i series robots. This sensor helps the robotic vacuum cleaner to dock correctly and efficiently when not in use. The set includes all the necessary components to ensure a proper fit and function for your iRobot Roomba vacuum model. Ideal for those looking to maintain the performance and efficiency of their robotic cleaning system, this Front Bumper Docking IR Sensor is a reliable and essential part for your Roomba i Series vacuum cleaner. tested and works as it should.