The versatile A19 shaped bulb screws in like other general purpose light bulbs and is compatible with E26 medium base socket fixtures. Use in table lamps, floor lamps, ceiling fixtures and more. Upgrading your home's light fixtures to smarter versions is as easy as replacing a light bulb. Control the bulbs using your favorite voice assistant. Enjoy the convenience of managing the lights in your home with just your voice. Change colors, turn them on/off and dim with simple voice commands.