After connecting to electricity, red light indicates the standby status. Press the power button for 3 seconds, UVC light turns on means sterilizing mode is activated for 1 minute. When returned to standby status, press the power button again. Flashing red light indicates the preheat mode (around 80 seconds); green light flashes when fully preheated. Now press power button once, green light indicates steam ironing mode; press again until green light flashes, indicating dry ironing mode. When in use, press power button anytime to switch between “Steam Ironing Mode” and “Dry Ironing Mode”. When in use, press power button twice until red light turns on, when the iron will stop heating and return to standby status.