what would be good hardware to connect about 25 wired contact switches to the Openhab and get their status. These are contact switches on my doors and windows, so I want to detect if the window is closed/open.
Currently they are wired to a Nikobus binary input modules (05-206) but this way it will only trigger changes (from open to close). There is no way to read or get the absolute state in Openhab. So there is a risk of getting out of synch if a state change is missed. That’s why I want to re-connect them to another Openhab input device that is able to read the open-close status and not just trigger the status change.
Any suggestions on what to use best or experiences.