When Xiaoda sterilization lamp is in use, no one should be present or look directly at the light source. This sterilization lamp turns on after a delay of 30 seconds and turns off after 30 minutes. 1. Press and hold the button for 3 seconds, the indicator light flashes blue. Remind you that the machine is turned on. 2. The lamp will light up automatically after 30 seconds. You need to leave the machine within this time to avoid direct light from the lamp. 3. After 30 minutes of one working cycle, the product will automatically shut down.