... .3.MODEThe following mode will appear on the LCD display when push this button for 2 secomds.4. ... it7.ON/OFF Set the unit power on or off.Please note: Push "ON/OFF", the LCD will diaplay "ON",the ... spray 1 time and enter into normal working condition; Push this button again, the LCD will display"OFF", ... the working condition; Push this button again, the LCD will display "OFF", ...