Abstract: The invention relates to a device using a sensor and a control system, which is configured to automatically change its state under certain conditions. The control system is configured to analyse measurement data derived from the sensor readings and to identify whether the device is in an operating environment or a non-operating environment. The control system will then cause the device to automatically enter into or revert to a particular mode of operation depending on the outcome of the analysis.

Abstract: The invention relates to a reproductive status indication system that comprises an electronic sensing device placed on a bovine, wherein the device is adapted to detect the bovine's reproductive activity and produce reproductive activity data based on that activity. The reproductive status indication system also comprises a data processing system, which analyses the data according to a preselected reproductive activity threshold and time threshold to make a determination as to whether or not the bovine is likely pregnant, following a breeding event, and to cause the reproductive status indication system to provide a visual indication of whether or not the bovine is pregnant, based on that determination.