Provided are techniques and apparatuses for determining the geographic location of a node on a network. The device also provides a dosing element internal the device chamber, thus eliminating the need for additional components. The gear system is adapted to have a non-rotating configuration and an engaged configuration. The polyurethane compositions are substantially metal-free, have low extractables, and excellent melt strength. A soft switching circuit is connected to the primary side, eliminating the need for high side drive.