Features:
SMART UPGRADE: Works with Alexa to add voice control to your home; an easy upgrade from your traditional dimmer switch that can control the light from 1 or 2 locations 
SETUP REQUIREMENTS: Neutral wires required, 2.4 GHz Wi-Fi, smart dimmer must be connected to LOAD (not LINE) 
3-WAY COMPATIBILITY: Compatible with traditional 3-way switch; NOT compatible with traditional 3-way dimmer or 4-way switch/dimmer 
CONTROL FROM ANYWHERE: Schedule lights to turn on and off with Alexa routines and control them from anywhere using the Alexa app 
NO SMART HOME HUB REQUIRED: No additional smart devices or apps needed; works exclusively with Alexa