To check the sensitivity of an individual detector on the 6820, navigate through the Point Status menu. The control panel constantly monitors these levels to ensure they remain in compliance with NFPA 72 (Page 116) [1].
The display will show the sensitivity status on the fourth line:** NORMAL** indicates the detector is in compliance, CAL MAINT means it is approaching an out-of-compliance condition but is still currently compliant, and CAL TRBLE means it is no longer in compliance (Page 117) [1], [3].