Variety is key. The Smart Home Panel connects up to 10 home circuits for home backup, with different current ratings for different connected loads Simple installation. After consulting your electrician and determining your backup loads, installing and replacing relay modules can be done with ease Replace without affecting other circuits. Each module has two modules and an overcurrent protection fuse for each circuit. That means you can swap one out without affecting the other circuits. If you need to swap a relay module, the EcoFlow app and the on-unit LED will notify you of any errors