XP Series Personal Gas Detector
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In set-up mode, pressing the Up or Down button selects the function and pressing the On/Off button 
activates the function, so that the displayed value may be changed. For each value, pressing the Up 
button increases the displayed value, pressing the Down button decreases the displayed value, and 
pressing the On/Off button sets the displayed value. Once the displayed value has been changed and 
accepted, then the new value is stored within the detector. The value can be returned to its previous 
value by pressing the Up and Down buttons together, e.g.
 
        Prompt                  UP button to increase
 
              On/Off button to accept       Up + Down button to cancel
If no button is pressed within 20 seconds or both buttons are pressed together the XP will revert back 
to its normal gas monitoring mode.
The flowchart diagram on the following page explains the process.