A data logging device (1) that includes more than one communication devices (7), a stored instruction list (6), input ports (3), output ports (8), data buffers (4) and a processing unit (5); wherein: the data logging device (1) collects, processes and forwards data and/or predetermined signals to one or more external locations (10); the data/predetermined signal is independently transmitted to said one or more external locations (10) using one or more communication devices (7) and/or frequencies; such that, if a chosen communication device is not available, or cannot reliably transmit the data/predetermined signal to said one or more external locations (10), then the processing unit (5) consults the instruction list (6) and selects the next predetermined communication device (7), until transmission is successful or the instruction list (6) dictates another action.