TREATLIFE 3 Way Smart Dimmer Switch 2 Pack, 2 Master 3 Way Dimmable Light Switches, 2.4GHz Smart Switch Compatible with Alexa and Google Home, Neutral Wire Needed, No Hub Required, Remote Control

Easy to Install: Neutral wire required(Pre-mid-80s homesmay lack it), no hub required, works with 2.4G WiFi only ( NOT 5G). The installation was fairly easy to follow based on the clear instructions provided. Just replace one of the two 3 way dimmer switches and leave your other existing 3-way switch in place. Make sure to install Treatlife switch on the line side (the source of power) and the 3-way switch on the other end needs to be a standard/dumb 3-way.
2 Master 3-Way Smart Dimmer Switches: For 2 different 3 way setups, only need 1 treatlife 3-way dimmer switch for each 3-way circuit. Comes with two main switches that could be used independently, you can install one to replace a current three way setup in a hallway and use the other one in a bedroom. Control the dimming of 1 Light from 1 or 2 Places, can be used as a 3-way or single-pole switch. The smart dimmer switch is only for dimmable bulbs.
1%-100% Brightness Adjustable and Voice Control: Slide a finger up or down to adjust the light brightness without clicking noise. Compatible with Alexa, Google Home, and SmartThings but not Apple Homekit. The voice assistants make it easy to control and dim all the lights with voice commands. This smart light switch can memorize the last brightness setting to help you get the most comfortable light after powering on.
APP Remote Control and Schedule：Remotely control the lights in your home via APP on your smart phone for security purposes and convenience. Create schedules to automatically turn lights on or off at preset brightness based on your daily routine. App Remote and scheduling works great as well for when you’re on vacation.
Reliable Technical Support: FCC Certified. Flame-retardant material and built-in overheat protection for safety. 1-year warranty. If you have any questions about installation, use or any other aspect, feel free to contact our Treatlife team, we will check it for you timely and give you full guidance.