Provided are alkyl lactyllactate compositions that can be prepared from lactide or alternatively lactic acid, and a hydroxyl containing compound such as an alcohol, preferably a fatty alcohol or an alkoxylated alcohol, with an acid catalyst. The system has an isolation chamber located between the clean room and a staging area. At least one static sealing member is attached to and encapsulates each pocket section. The bracket has a first portion fastened to the roof panel and a second portion extending away from the roof structure and welded to the vehicle body. The magnetic block is rotatable along with the rotary shaft to be instantaneously aligned with the Hall device.