EverFocus TFT-LCD MONITOR EN-75084C - Manual (Page 30)

5) Press the up(▲) or down(▼) button to select the On or Off and then press the Menu button to save.
INSTRUCTION MANUAL ……………………………………………………………………. 23
7-3. Auto switching Time
1) Press the up(▲) or down(▼) button to select the Time.