while a transfer switch is for changing from one power source to another. The main purposes of the two are very different. If you have an EcoFlow transfer switch installed, there’s no need for an interlock.
A professional installation will keep you from accidentally electrocuting someone else or yourself and ensure your portable generator runs as best it can. Interlock kit: These are fairly simple to install and the cheapest option. However, they are illegal in many areas and can be very unsafe. ...