RADAR SENSOR will automatically light up sensor motion light bulbs if it senses movement within 12-20 feet at night or in dark, dusk to dawn, sunset to sunrise. Motion sensor bulb will auto turn off after 45 seconds if movement stops. Best Motion Detection Distance 16ft.
https://www.amazon.com/Motion-Sensor-Light-Bulb-Outdoor/dp/B07BKP35RG

