Abstract: A pressure sensitive device includes a housing having an interior cavity and a narrow downwardly extending portion. A support plate is disposed within the housing cavity along with a flexible diaphragm which is sealingly mounted to a bottom facing side of the support plate. A movement mechanism interconnected to the diaphragm includes a pressure sensitive element which is responsive to the impingement of incoming fluid on the sealed diaphragm. The movement mechanism is disposed within a narrow extending portion of the housing to assume a compact and shallow profile which facilitates direct attachment to existing devices, such as blood pressure sleeves. In a preferred version, the movement mechanism is disposed within a cavity defined by the diaphragm.