The Caseta Wireless In-Wall Switch works with up to 6A of lighting (LED/incandescent/halogen/ELV/MLV), and 3.6A of general-purpose fans. Neutral wire required. For 3-way applications, existing 3-way switches or Pico Remotes can be used with this switch. 4-way or multi-location applications require Pico Remote controls. Replace the existing switch with a Pico remote control and wall plate adapter to switch from every location (PICO-WBX-ADAPT sold separately). Use the Lutron Smart Hub (L-BDG2-WH) to connect the Caseta In-Wall Smart switch to more leading smart home devices - including Alexa, Apple Home, Google Home, Ring, and Sonos. Not only does the Lutron Smart Hub unlock smart control and device integration - but it also doesn't use Wi-Fi to control your lights. With the Lutron Smart Hub you stay connected even when your Wi-Fi goes down and you avoid slowing down your internet speed with more devices. Enable the Smart Away feature to randomly turn lights on and off, to make it look like you're home, even if you're away (Lutron Smart Hub, L-BDG2-WH required). Pairs perfectly with Lutron Claro wall plates for consistent color matching (sold separately).