Genuine OEM Audi Movement Detector, part number 8V0951177. This sensor is a key component of the vehicle's security system, designed to detect motion within the interior cabin. Upon detecting unauthorized movement, it triggers the alarm, providing an essential layer of protection against theft and intrusion. It is typically mounted in the overhead console area. Choosing a genuine OEM sensor ensures precise calibration, correct signal characteristics, and seamless integration with the vehicle's alarm control module for reliable and accurate operation.