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- To activate the detector, press and hold
 in a safe area that is free of hazardous gas and in an atmosphere of 20.9% oxygen.
- To deactivate the detector, press and hold during the powering off countdown. Release when OFF displays.
- To view the date/time, current battery power, calibration due date, bump test due date,
TWA, STEL, and peak readings, press twice rapidly. To clear the TWA, STEL, and
peak readings, presswhen the LCD displays Hold to reset peaks, TWA, STEL.
- To initiate calibration, press and hold while the detector performs the OFF countdown.
Continue holding while the LCD briefly deactivates and then reactivates to begin the calibration countdown. Release when Calibration started displays.
- To activate the backlight, press and release.
- To acknowledge latching alarms, press
- To acknowledge a low alarm and disable the audible alarm, press. The Low Alarm
Acknowledgeoption must be enabled in Fleet Manager II.
- To acknowledge any of the
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