How do I adjust the display brightness? October 08, 2024 23:37 Press and release the “ZZZ/display dimmer” button to cycle through and select the desired display brightness level. Related articles How do I adjust the display brightness? How do I adjust the display brightness? How do I program the Snooze time and AUTO Dimmer for daytime and nighttime? How do I adjust the display brightness? TIMEBASE II (iBTW22)