TEMPERATURE SENSOR TESTING

A method of testing temperature sensors of refrigerated cargo spaces (30), comprising: installing a wireless temperature sensor (100) in proximity of a cargo space temperature sensor (90) of a refrigerated cargo space (30); receiving, at a data processing device (50), temperature data from both the cargo space temperature sensor (90) and the wireless temperature sensor (100); calculating a temperature difference between the temperature measured by the cargo space temperature sensor (90) and the wireless temperature sensor (100); and calibrating or replacing the cargo space temperature sensor (90) if the temperature difference exceeds a threshold difference.