Honeywell BW GasAlertMicro User Manual page 23

8. Sensor Test: The LCD displays tESt when the detector
tests the sensors.
If a sensor fails the self-test, the detector indicates an alarm
by beeping, flashing, and vibrating. The LCD displays
SEnSor _ hAS FAiLEd and lists which sensor has failed.
Sensor 1: CO/H
2
Sensor 2: LEL
Sensor 3: Oxygen
9. MultiMediaCard (MMC) Test: (optional): If there is no
MMC card installed, the LCD displays a scrolling error
message.
S or SO
2
The card is not required for operation; the message is a
reminder only.
10. Oxygen Sensor Test: Unless this feature is disabled,
the oxygen sensor is calibrated automatically.
If the automatic oxygen calibration feature has been
disabled, the LCD displays the O
screen.
GasAlertMicro
Activating the Detector
calibration current mode
2
13