Motion Sensor Light Bulb PIR Infrared Detection White LED forpow E27 2.5w with Adjustable Tube,Auto Switch Energy Saving Stair Night Lamp,Warm White for Passageway,Bedroom,Toilet,Doorway Auto On/Off:Hands-free,auto pir motion detection for light on/off if the infrared detector activated by people's movement such as when someone walks into its area of detection. Good & Wide Sensitivity:Motion detection range is within 15 feets and 120 degrees from center of PIR sensor, up to 400 lumens. 30s Lasting Lighting:The light will last for about 30seconds after the infrared detection ceases. Wireless Flexible: with E27 base,easy,Simply to install in an existing light socket (indoor only) and then screw bulb into the fixture. Multi-Functional Occasion:Suitable for corridor,stair, storage room,garage,doorway,office.