A switch includes a push rod which extends from an underside of a switch member and the push rod selectively pivots an action member in \u201cON\u201d and \u201cOFF\u201d positions. Pharmaceutical compositions and methods of making and using the compounds, are also described. A retiming graph is constructed from the initial design, and a retiming solution is obtained on the retiming graph. The remote receiver calculates position based on the time offsets, and as appropriate, the ranges provided by the base receiver.