A data acquisition and/or control module (101) for interfacing with a device (115) is provided. The module (101) and device (115) form part of a sensor/control network. The module (101) comprises a transceiver (103) for receiving data from and transmitting data to the sensor/control network, a first microcontroller (107) connected to a second microcontroller (109), first and second memories (105a, 105b) external to both the first and second microcontrollers (107, 109), and switching means. The first microcontroller (107) is further connected to the transceiver (103), while the second microcontroller (109) is further for connecting to the device (115). The switching means are operable to connect one of the first and second microcontrollers (107, 109) selectively to one of the first and second memories (105a, 105b), and to connect the respective other of the first and second microcontrollers (107, 109) to the respective other of the first and second memories (105a, 105b).