Click once to turn on the default human body sensing mode. In a low-light environment, the light will turn on when a person walks within the sensing range, and will automatically turn off after about 20 seconds of leaving. Click the button to turn on white light, yellow light, two-color light, and off. In the on state, long press to adjust the brightness. When it reaches the brightest, the prompt light flashes once. In the sensing state, press twice quickly to enter the constant light mode (the light flashes twice and then stays on). In the constant light state, press once to switch to sensing.