TREATLIFE Smart Dimmer Switch 4 Pack, Single Pole Smart Switch Works with Alexa and Google Home, Neutral Wire Required, 2.4GHz WiFi Dimmer Light Switch for LED, CFL, Incandescent Bulbs

Compatibility for Bulbs: The smart switch dimmer only works with dimmable, non-smart bulbs–max 150W for LED/CFL, 400W for incandescent. Not compatible with smart or non-dimmable bulbs. Not compatible with Apple HomeKit
Compatibility for Wiring and Pairing: Need a neutral wire (note: some homes built before the mid-1980s may not include one). Only works with single-pole setups, not 3-way or multiple ways. Supports 2.4GHz Wi-Fi networks when pairing (5GHz not supported), no hub needed. Wall plate cover included, switch dimensions: 4.14″ (L) x 1.73″ (W) x 1.34″ (D)
Adjustable Brightness and Voice Control: Smooth 1%–100% dimming with a tap, app, or voice command. The light dimmer switch remembers your last setting after power-offs and works with Alexa & Google Assistant for hands-free convenience