The SensorGnome keeps track of when and how often it reboots, and keeps an internal reboot odometer that increments each time. When you first arrive at a SG in the field, you hope to see that the SG has been running for a long period prior to your arrival, and that it has not rebooted very often during that period. It’s not necessarily a problem if you see that the SG recently rebooted prior to arrival, or that it has rebooted many times since the last visit, but it does potentially point to issues with a power supply, wiring, or perhaps gradual hardware failure.