CONTROLS Levoit Air Purifier
On/Off Button
- Turns the air purifier on/off.
Fan Speed Button
- Cycles through fan speeds: I (low), II (medium), and III (high).
Sleep Mode Button
- Turns Sleep Mode on/off (see page 11).
Timer Button
- Cycles through timer options (see page 11).
Display Lock Button
- Prevents current settings from being changed (see page 11).
Check Filter Indicator
- Lights up when the filter should be checked (see page 14).
Display Off Button
- Turns the display off.
- Tap any button (except ) to turn the display back on.
https://manuals.plus/levoit/core-300-true-hepa-air-purifier-manual#ixzz7r69FKEJn