ELEDISON 1-Pack Microwave Radar Motion Sensor LED Globe Bulb E27 7W with Photosensor Only Working at Night Motion Detection 85-265V for Stair Hotel Passageway Warm White 3000K Motion sensor LED bulb 7W, E27 screw base, Warm white 3000K, 85-265V input. Updated with photosensor, it will not work when brightness &gt;10Lux. 90% Saving on electricity bills, reducing maintenance cost. Mercury-free, safe for your home and the environment. It will work on/off automatically when detecting movement. Note: The bulb will automatically work at night (&lt;10Lux). They are good choices for stairs, hotels, porch, garage, etc.