Warm Tips: A Neutral Wire is needed. The standard size fits any standard multi-gang wall panel. The complimentary 1-gang faceplate measures: 5.07(L)3.34(W) inches, the internal switch box dimensions: 2.75(L)1.69(W)*1.61 (D) inches. FCC certified for safety. The smart switch is only suitable for single-pole (Not 3-way), and 2.4GHz wifi only (Not 5GHz).

Stepless Dimming & Memory Function: The smart switch can remember and turn back to the last setting after powered off. Adjust the light dimming range to a certain percentage by moving your finger up or down or via app or a voice. It can be used for non-smart but dimmable LED 150W Max, Halogens/Incandescent 400W Max, CFL 150W Max bulbs.

Enhanced Voice Control: The dimmer smart switch works with Alexa & Google Home Assistant (Not support Homekit) to conveniently control the light with the simple voice command while your hands are full or when it is dark in your room. No Hub required. Make your Christmas decorations smarter.

Smart APP Remote Control: Ideal for when you're away from home or when you are sitting on your cozy sofa or comfortable bed, you can manage your house's lighting via APP on your smart phone from anywhere at anytime.

Light Schedule & Group Control: You can 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.

product information: