1This light sensor is the latest version, all functions are builtin, plug and play 2Automatic Headlight Sensor and Switch for MK5 MK6, B6 . 3It has the memory function, you can set it and let it get to work anytime you want, much better than the old version 4Quick response it needs less than 1 second to be automatic open headlight. 5According to original factory specifications, perfect match to original car. Features: This light sensor is the latest version, all functions are built-in, plug and play Automatic Headlight Sensor and Switch forMK5 MK6, B6. It has the memory function, you can set it and let it get to work anytime you want, much better than the old version Quick response - it needs less than 1 second to be automatic open headlight.Protect your battery - before the car starts, lights turn off automatically; after the car starts, lights turn on after 3s. According to original factory specifications, perfect match to original car.Robust plastic housing, not easy cracking, ultra durable.Directly replace the old or broken power window switch, easy to install.Replacing manufacturer part number for reference: 1Z0941431K.Specification: Material: ABS Plastic Color: Black Manufacturer Part Number: 1Z0941431K Size: 7.9 * 6.3cm/3.1 * 2.5in Cable Length: 118cm/46.5in Package Weight: approx.134g/4.7oz Three lighting Modes:1. Tunnel mode (Reaction time: 1s)2. Normal mode (Reaction time: 3s)3. Delay mode (Reaction time: 5s) Fitment:For MK5 MK6 2004-2013For 2003-2015 (2016 2017 is not included) Package list: 1 * Headlight Switch with Light Sensor Module Notes:It is necessary to check whether the interface matches before purchasing. 1.The compatibility is just for reference. Please compare the Part No. with your original one before purchasing 2.Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 3.Before purchase, it is necessary to check whether the product image interface is consistent with each other. The fog lamp cannot be recognized automatically. You need to pull the headlamp gear up to turn on the fog lamp function.