Quick Sense(QS-05): Small Adjustable PIR Motion Sensor Day Night Indoor Light Switch (White) Using the automatic control product of infrared technology, when people walk into the sensor range, and the sensor can detect the spectral change of the human body infrared ray, during this time, the switch will connect the load automatically until the person leaves the sensor range Solution for energy-saving and easy installation. and Delay adjustment: 10 Seconds - 7 Minutes and Adjustable Lux: turn on the lights during the day or night Sensitivity adjustable: turn on lights during day or nights