Dedicated wifi for presemce sensor?

Im currently usingy android phone with sharp tools and tasker as a presence sensor to open and close my garage door. The problem im having is when I pull iny driveway my phone will sometimes hook on to the wifi extender instead of the main wifi thus not allowing tasker and sharp tools to fire. Is there a way to get my phone to connect to the main wifi network every time?

You’re always going to connect to the strongest remembered access point, so you’ll have to forget the one you don’t want to connect to. If you need to connect again to the other one, don’t select Connect Automatically.