When "see" people in, the lamp work, when people out, it will be off. To save energy in daytime when bright enough, no matter people in or not, Smart Light doesn't work. ---The smart light, Motion sensors, LED sensor lampsWe are a ISO9001 certificated manufacturer, In our workshop, there are 216 workers. We have CE, RoHS, Energy efficiency report(Class-A), TISI for our smart light. We are producing patent motion lamp(only we can produce), LED sensor lamp, motion sensors. We are engaged in saving energy and save the earth. Let's turn off the lights when don't needed.