Treatlife Smart Dimmer Switch 4 Pack, Smart Switch Works With, Single Pole. [Adjustable Light Dimming Memory Function] You will easily be able to adjust the light dimming range from 1% to 100% buy moving your finger up and down or through app or voice, the smart switch can remember and turn back to the last setting after the powered off. [Hands-free Voice Control] The smart switch works with Alexa and Google home assistance to conveniently control the light with a simple voice command, for that hassle-free experience, even when you are in the dark. Further, there is no hub required, to make your decorations smarter. [Smart App Control] You can manage your house lighting through the app on your smartphone from anywhere, anytime, making it an ideal for you to control when you are at home on your sofa or away from home, for that comfortable experience. [Custom Schedule Group Control] You will be able to create schedules to automatically turn the light on and off, along with the preset brightness at your preferred times. Further, you can also share the app with the family members, so that they can control the switch, on behalf of you. [Compatibility After Sales] The switch is compatible with non-smart but dimmable LED 150W max, Halogens/Incandescent 400W max, CFL 150W max bulbs and a neutral wire is needed. Also, it is only suitable for single pole and not 3-way poles, with 2.4GHz Wi-Fi and not 5GHz. The standard size fits any standard multi gang wall panel and the installation guide will guide you through the wiring process. Further, if you face any problems, please feel free to contact us.