A system for sensing medicament delivery and transmitting an Operation modification signal having at least two separable components (10, 210, 220) comprising: a flow sensor (10, 210) having: a fluid port having a flow tube; a fluid inlet at a first end of the flow tube adapted to couple to an outlet of a fluid source; a fluid outlet at a second end of the flow tube adapted to deliver fluid from the fluid source to a fluid pathway that provides fluid to a patient; at least one sensor (150, 151) to characterize at least one attribute of the fluid from the fluid source; and at least one pin in electrical communication with the at least one sensor (150, 151); and a base housing: at least one contact; a controller in electrical communication with the at least one contact that generates at least one Operation modification signal in response to at least one attribute matching at least one condition specified by at least one rule; a transmitter for wirelessly transmitting the Operation modification signal to at least one device, the operation modification signal, when received by the at least one device, causing the at least one device to modify at least one operating parameter; the system further comprising a cross-component electrical circuit, wherein the flow sensor (10, 210) is contained within a flow sensor housing (211, 212) that is separable from and mountable onto the base, and wherein said cross-component electrical circuit is a connection made by said contacts engaging said at least one pin when said flow sensor housing (211, 212) is mounted onto the base characterized by, the flow sensor (10, 210) further comprising a follower and said base further comprising a cam wherein said follower follows at least a portion of said cam when said flow sensor (10, 210) is mounted to the base, the flow sensor further comprising an opening and said base further comprising a protrusion wherein said opening is sized and shaped to engage said protrusion and said cam is adapted to move said follower away from said protrusion while said protrusion enters said opening when said flow sensor (10, 210) is mounted to said base. a flow sensor (10, 210) having: a fluid port having a flow tube; a fluid inlet at a first end of the flow tube adapted to couple to an outlet of a fluid source; a fluid outlet at a second end of the flow tube adapted to deliver fluid from the fluid source to a fluid pathway that provides fluid to a patient; at least one sensor (150, 151) to characterize at least one attribute of the fluid from the fluid source; and at least one pin in electrical communication with the at least one sensor (150, 151); and a fluid port having a flow tube; a fluid inlet at a first end of the flow tube adapted to couple to an outlet of a fluid source; a fluid outlet at a second end of the flow tube adapted to deliver fluid from the fluid source to a fluid pathway that provides fluid to a patient; at least one sensor (150, 151) to characterize at least one attribute of the fluid from the fluid source; and at least one pin in electrical communication with the at least one sensor (150, 151); and a base housing: at least one contact; a controller in electrical communication with the at least one contact that generates at least one Operation modification signal in response to at least one attribute matching at least one condition specified by at least one rule; a transmitter for wirelessly transmitting the Operation modification signal to at least one device, the operation modification signal, when received by the at least one device, causing the at least one device to modify at least one operating parameter; at least one contact; a controller in electrical communication with the at least one contact that generates at least one Operation modification signal in response to at least one attribute matching at least one condition specified by at least one rule; a transmitter for wirelessly transmitting the Operation modification signal to at least one device, the operation modification signal, when received by the at least one device, causing the at least one device to modify at least one operating parameter; the system further comprising a cross-component electrical circuit, wherein the flow sensor (10, 210) is contained within a flow sensor housing (211, 212) that is separable from and mountable onto the base, and wherein said cross-component electrical circuit is a connection made by said contacts engaging said at least one pin when said flow sensor housing (211, 212) is mounted onto the base