Techniques for detecting changes in operational characteristics of a group of sensor devices are described. The techniques collect sensor information from plural sensor devices deployed in a system, with the collected sensor information including sensor data and sensor device metadata. The techniques continually analyze the collected sensor information to detect changes in the operational characteristics of a sensor device in the group of sensor devices. Upon detection of changes in the operational characteristics of the sensor, a database that stores maintenance organization contact information is accessed and a request is generated for maintenance on the sensor device, which request is sent to the maintenance organization.