Abstract: A pressure actuated switch for a pressure control region includes a diaphragm with a first electrically conductive surface and a second conductive surface electrically isolated from the first conductive surface. The switch also includes an evacuated cavity disposed between the first conductive surface and the second conductive surface and includes a piezoelectric assembly on which is mounted the second conductive surface. A controller applies a control signal to the piezoelectric assembly. The piezoelectric assembly in response to the control signal translates the second conductive surface to set a trip point of the switch. The diaphragm is exposed to the pressure of the pressure control region. In response to the pressure applied to the first conductive surface, the first conductive surface deflects in a direction toward the second conductive surface. The first conductive surface communicates with the second conductive surface to produce a signal when the applied pressure is sufficiently large.