A system for sensing medicament delivery and transmitting an operation modification signal having at least two separable components comprising: a first component comprising a flow sensor 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 a movable detector which detects a coupling of the outlet of said fluid source to said fluid inlet of said flow sensor; and a second component comprising a base having: a controller that generates the operation modification signal in response to at least one attribute matching at least one condition specified by at least one rule; a switch for activating said controller; and 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, wherein the flow sensor is mountable onto the base and said movable detector is engageable with said switch to activate said controller, wherein the movable detector comprises a cantilevered beam protruding from a portion of said flow sensor, said cantilevered beam having a free end having an outlet engaging portion and a switch engaging portion, said outlet engaging portion extending in a direction generally perpendicular to said cantilevered beam, said switch engaging portion extending in a direction generally opposite to the outlet engaging portion, and wherein said switch engaging portion is configured to engage said switch by deflection of said cantilevered beam in response to the fluid source contacting the outlet engaging portion upon coupling of the fluid source to the fluid inlet of the flow sensor. a first component comprising a flow sensor 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 a movable detector which detects a coupling of the outlet of said fluid source to said fluid inlet of said flow sensor; 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 a movable detector which detects a coupling of the outlet of said fluid source to said fluid inlet of said flow sensor; and a second component comprising a base having: a controller that generates the operation modification signal in response to at least one attribute matching at least one condition specified by at least one rule; a switch for activating said controller; and 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, a controller that generates the operation modification signal in response to at least one attribute matching at least one condition specified by at least one rule; a switch for activating said controller; and 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, wherein the flow sensor is mountable onto the base and said movable detector is engageable with said switch to activate said controller, wherein the movable detector comprises a cantilevered beam protruding from a portion of said flow sensor, said cantilevered beam having a free end having an outlet engaging portion and a switch engaging portion, said outlet engaging portion extending in a direction generally perpendicular to said cantilevered beam, said switch engaging portion extending in a direction generally opposite to the outlet engaging portion, and wherein said switch engaging portion is configured to engage said switch by deflection of said cantilevered beam in response to the fluid source contacting the outlet engaging portion upon coupling of the fluid source to the fluid inlet of the flow sensor.