Assertion: thermostat's battery | /r/Desires | manual intervention
Facets:
value: after a power fail
type: TEMPORAL
Source sentences:
text: The battery that came with it tested fine, and another tested fine as well, but the date/time will require manual intervention after a power fail (all the other settings appear to stay intact; I'm not sure if the battery maintains these, or if they are written to flash memory).