A well comprising: - a borehole with an upper tubular and a lower tubular therein, each tubular having a longitudinal bore; and - a well apparatus, the well apparatus comprising: - an annular barrier provided between one of the borehole and a casing (12a, 12b, 12c) within the borehole, and one of the upper and lower tubulars, such that the upper tubular extends from and above the annular barrier such that an annular space above the annular barrier is provided between the upper tubular and the borehole, and the lower tubular is provided in the borehole below the annular barrier; - a pressure activated device exposed to pressure between the upper tubular and the borehole, and adapted to detect a characteristic change in pressure; - an electronic transmitter above the annular barrier and coupled to the pressure activated device, and configured to transmit a control signal; - a flowpath through at least one of the longitudinal bore of the lower tubular and a port in the lower tubular; - a valve connected to the lower tubular, the valve configured to allow or resist flow of fluids through said flowpath; - an electronic control mechanism below the annular barrier to control the valve, the electronic control mechanism comprising an electronic communication device with a receiver configured to receive the control signal from the electronic transmitter for operating the valve; wherein the electronic transmitter and the receiver comprise an acoustic transmitter and receiver or an electromagnetic transmitter and receiver. - a borehole with an upper tubular and a lower tubular therein, each tubular having a longitudinal bore; and - a well apparatus, the well apparatus comprising: - an annular barrier provided between one of the borehole and a casing (12a, 12b, 12c) within the borehole, and one of the upper and lower tubulars, such that the upper tubular extends from and above the annular barrier such that an annular space above the annular barrier is provided between the upper tubular and the borehole, and the lower tubular is provided in the borehole below the annular barrier; - a pressure activated device exposed to pressure between the upper tubular and the borehole, and adapted to detect a characteristic change in pressure; - an electronic transmitter above the annular barrier and coupled to the pressure activated device, and configured to transmit a control signal; - a flowpath through at least one of the longitudinal bore of the lower tubular and a port in the lower tubular; - a valve connected to the lower tubular, the valve configured to allow or resist flow of fluids through said flowpath; - an electronic control mechanism below the annular barrier to control the valve, the electronic control mechanism comprising an electronic communication device with a receiver configured to receive the control signal from the electronic transmitter for operating the valve; wherein the electronic transmitter and the receiver comprise an acoustic transmitter and receiver or an electromagnetic transmitter and receiver. - an annular barrier provided between one of the borehole and a casing (12a, 12b, 12c) within the borehole, and one of the upper and lower tubulars, such that the upper tubular extends from and above the annular barrier such that an annular space above the annular barrier is provided between the upper tubular and the borehole, and the lower tubular is provided in the borehole below the annular barrier; - a pressure activated device exposed to pressure between the upper tubular and the borehole, and adapted to detect a characteristic change in pressure; - an electronic transmitter above the annular barrier and coupled to the pressure activated device, and configured to transmit a control signal; - a flowpath through at least one of the longitudinal bore of the lower tubular and a port in the lower tubular; - a valve connected to the lower tubular, the valve configured to allow or resist flow of fluids through said flowpath; - an electronic control mechanism below the annular barrier to control the valve, the electronic control mechanism comprising an electronic communication device with a receiver configured to receive the control signal from the electronic transmitter for operating the valve;