You should always buy a larger distribution box. Most experts suggest adding 20% to 30% spare space. Adding an Electric Vehicle (EV) charger later will require 2 spare slots. The smart home market is growing fast. More families trust smart. The aim of this work is to develop a smart, modern, and intelligent distribution board with high efficiency capable of handling current up to 60A, the advance circuit protection mechanism ensures safety to the end users and the electrical system, the system reduces down-time and improves. We provide kinds of samrt distribution box, the difference is the number of channels and load power current. YouTube video tour: https://www. com/forum/ This is demo video that how to. An even more user friendly device box. The new 1 thru 6 gang Multi-Mount device boxes are a hybrid of the Original Smart Boxes. These boxes offer additional built in features such as removable nail tabs used for metal stud mounting, removable interior mounting blocks to allow for more cubic inch in. Order in the next 17 hours 31 minutes to get it by FRI May 15 Renogy Smart Management System Everything needed to convert your old system or install a new total management system. 20P installation space,allowing free combination of various types of smart miniature circuit breakers.