ON/OFF mode is an exclusive working mode Rayzeek introduced to make our motion sensor switch to be a perfect replacement for regular light switches. ON/OFF mode provides a permanent manual override to the sensor that makes the motion sensor light switch work exactly the same as a regular light switch. You can enter the ON/OFF manual mode by pressing the small button. Simply press the small button again to switch from ON status and OFF status, just like how you operate a traditional light switch. Press the big button to exit ON/OFF mode and return to the previous occupancy or vacancy motion detection mode.