An acceleration sensor includes a detection element having a plurality of piezoelectric ceramic layers laminated together and a pair of retaining members that retain an end portion of the detection element in a longitudinal direction thereof at two principal surfaces of the end portion. The clip includes a release edge configured to engage a flared lip of a dovetail shim. A first electronic document is received via an electronic communications network at the first electronic mail address from a second entity, typically a user of the knowledge management system who is a registered and interactive user. A fully integrated RF switch is described including control logic and a negative voltage generator with the RF switch elements.