iRainy E27 12W LED Infrared Motion Sensor Pir Warm White Light Bulb Lamp auto switch Stairs light (12W PIR-Warm White) Bulb can be installed near stair, better to let bulb head turn to exit/entrance The bulb should be keep far away from heater, air condition, fridge, stove, such places which temperature is high and sensitive (over absolute zero degree object will probably make bulb light up) .Don't put any shield, furniture, or big object around the bulb .Don't turn it to the window for avoiding hot air /white light perturbance, and body motion to wrongly light up the bulb.Don't install bulb near gate or airway Just 20% the Power consumption of the traditional incandescent lamp, the life is over 10 times longer than the fluorescent lamp; Auto PIR motion detection for light on/off, Low working voltage, secure and reliable, Low power consumption, good color saturation; Easy to install, use Safe and stable; Intelligent, energy saving, environmental protection;