New Radar Sensor. Level sensing: stronger sensing function. Keep Moving, Always Light ON. Leave the sensing distance, after 30S Auto OFF. Built-in inductor, more beautiful and easy to install. More Sensitive-0.1S ON. The induction lamp can be installed on the ceiling or wall. When you start the motion sensor bulb, it will turn on 5 minutes, it is normal. When you are in sensor range, it works about 25-30 seconds. After 30 seconds, if you do not move, the lamp will not work. Too bright or in the day, the lamp will not work. It only works in dark environment or at night.