Dear All!
I am trying to setup a synchronization between an external alarm module and Shelly Uni. I know the alarm module is correctly configured to open/close two outputs depending on the states of the alarm (output 1 close if alarm goes off, output 2 close if alarm is activated). This has been tested with Z-wave (Fibaro multi sensor) devices previously and now I try to get it to work with Shelly Uni instead but I am stuck.
The alarm device is a 3.3 v battery driven device (Visonic wl-iog) with one ground and two output connections (O1 and O2 programmed as described above). I have connected O1 to Shelly Uni IN_1 and O2 to Shelly Uni IN_2. I assume that a ground is needed as well (previously used the GND when synched to he Fibaro) between the Shelly Uni and the alarm modul but I cannot figure it out. The output state is not detected in the Shelly app. I have tried using the GND_SENSOR (#6) as ground. If I do not connect any ground (GND) at all it does not register the connection at all. If I connect the DATA cable (blue #5) to the Alarm GND they are both indicated as on (which is wrong).
Anything I am missing or suggestions on how to configure this? Any help would be apprechiated...