Abstract: A sensor includes a first substrate and a second substrate. The first substrate includes a first side and an opposing second side, with the first side having a recess. The recess is defined by one or more side walls and a bottom wall. One or more of the side walls are substantially perpendicular to the bottom wall. A sensing diaphragm is defined between the second side of the first substrate and the bottom wall of the recess. A boss extends from the bottom wall of the recess. The second substrate may include a first side and an opposing second side, where the first side has a recess. The first side of the first substrate may be secured to the first side of the second substrate such that the recess in the first substrate faces and is in fluid communication with the recess in the second substrate.

Abstract: Embodiments relate generally to systems and methods for tracking emergency responders. An emergency responder tracking system may comprise a beacon comprising a radio frequency module; a portable device, wherein the portable device is configured to receive a wireless signal from the beacon and transmit the wireless signal to a computer system, wherein the computer system comprises a user interface and is configured to receive the wireless signal from the portable device and provide a map, in the user interface, of a location of the beacon; wherein the wireless signal comprises a unique identifier, a location of the beacon, a last detected location of an emergency responder, and/or current time.