Gentlemen, a client asked me if it is possible to control garage doors, gates and electric door locks in a newly built house via an app on an Android phone. He is talking about a simple BMS with the possibility of expanding it with an alarm system, e.g. Satel, and controlling a gas cooker. I recommended a few PLC systems with the possibility of expansion, e.g. Fibaro, Nexwell and Wago 400... However, I am wondering if he will need such controllers... Can you do it yourself?