Shelly devices are retrofit! The smart relays easily integrate behind your existing light switches and wall sockets, with no need to rewire or make changes to the current electrical system. Shelly will help you modify the existing lights, home gadgets, and various appliances and will allow you to control them remotely while keeping track of their power consumption. Retrofitting solutions will help retain the familiarity and comfort of your present home appliances while updating them with the latest technology to enhance their efficiency.