Daylight Saving Time | P-DISC NO2

By default, your P-DISC NO2 is set to automatically switch back and forth to Daylight Saving Time (DST). This function can be disabled.

How to disable/enable Daylight Saving Time (DST)

1. Push and hold the button and button simultaneously for around 3 seconds, until you see either "don" or "doff" on the screen of your P-DISC NO2.
2. Use the button to navigate the menu, and select either DST ON (don) or DST OFF (doff). Use the button to confirm your choice and exit the menu.