The smart Wifi switch is home automation the easy way: Wifi switch seamlessly replaces your old wall light switch and works with any one-way connection light. Easily installable, and very economical. Neutral wire required and a minimum 33mm box. Simply download the free smart app, and control your lights and small appliances from anywhere in the world, right from your phone. No hub or subscription required. Electrical rating 120V/15A/60Hz/1800W.