Smart Dimmer Switch 4 Pack, Treatlife Light Works 4 White. [0%-100% Dimmable & Memory Function]: Adjust the light dimming range to a certain percentage by moving your finger up or down or via app or a voice, the smart switch can remember and turn back to the last setting after powered off.Use for non smart but dimmable LED 150W Max, Halogens/Incandescent 400W Max, CFL 150W Max bulbs. [Hands-free & Voice Control]: The dimmer smart switch works with Alexa & Google Home Assistant to conveniently control the light with the simple voice command while your hands are full or when it is dark in your room. Make your Christmas decorations smarter. Ideal for when you're away from home or when you are sitting on your cozy sofa or comfortable bed. [Light Schedules & Group Control]: Create schedules to automatically turn the light on or off with the preset brightness at specific times. You can also share the App with your family members to control the switch.