The primary use of the ALERT output is to provide a hardware notification of ambient temperature and relative humidity measurements that violate programmed thresholds. There are a total of four programmable thresholds for temperature and relative humidity, as documented in Table 8-3 and illustrated in Figure 8-25 below.
The four programmable thresholds are listed below
If the user application utilizes the ALERT output for environmental tracking, it is best practice to program these four thresholds prior to any temperature or relative humidity measurement acquisition. Programming enough separation between the Set versus Clear thresholds will prevent fast oscillations of the ALERT output.
These programmed limits are accessible at any time of operation .