Honeywell GasAlert Max XT II - Calibration Due Date

GasAlertMaxXT II
User Manual
46
If a sensor(s) fails any step of the calibration, the following screen
displays.
Note
If calibration is unsuccessful for a sensor(s), the calibration due
date cannot be set for the failed sensor(s).
Calibration Due Date
If a sensor(s) does not successfully span, the calibration due date for
that sensor(s) will not reset.