This read-only object reports the unit's internal temperature in degrees Celsius, ranging from -99 to 99, with UNITS explicitly declared as 'degrees Celsius' in the syntax. As with the CDD-564, trending this value over time is what actually catches a developing cooling problem -- a modem installed in an outdoor enclosure or poorly ventilated rack is especially prone to gradual thermal creep that a single spot-check would miss. A CDM-570 mounted in an outdoor enclosure that reads a comfortable 40 Celsius in spring but climbs to 80 Celsius during a summer heat wave would prompt an admin to check the enclosure's cooling fan or add shading before the unit suffers a heat-related fault.