Are there published failure rates or MTBF (Mean time between failures) statistics for each device?

All devices are back traceable to production dates and batches. FactoryLab has not documented failure-rate or MTBF data for their sensors but can draw knowledge from historical usage. A sensor contains no moving parts so when properly maintained we expect the MTBF to be > 10 years. Although not showing defects we recommend however replacing sensors every 6-10 years with the latest hard- and firmware.