Note: This PIR motion sensor light bulb CAN NOT work through glass or any lamp covers, as the bulb top must be completely exposed.-The bulb should be installed downward and no higher than 13 feet, or the sensor will not work. -Stay away from places where there is direct sunshine, air conditioner, dryer, heater or strong electromagnetic wave, so as to avoid interference. -If intend to use the bulb for outdoor fixtures, please find a way to protect it from water yet no blocking the sensor parts on the top of bulb. -Supports only normal switch and should always be turned on switch, and other switches like sound and light control switches, human body touch switches, human body sensor switches, sound and light control lamp Stand DO NOT work with the motion bulb. -Please DO NOT make purchase if fail to agree with the above instructions!

Feel free to contact us if not quite sure. Specification: Wattage: 9W Detection distance: 9-20 feet Shut down delay: 30 seconds Features: Reacts only to human or animal motion. Light off delay down to 30 seconds to meet our actual needs. Continuous movement keeps the light always on.

FAQ-Q: Can not light after installing? A: The bulb only lights when the brightness is lower than 10 LUX AND someone passing by.-Q: Can not light after driving car into garage, Is this bulb defective? A: Radar sensor bulb is better, while the PIR senser bulb can light only when the people get off the car.