Short answer: No, Matter will not give NSPanel Pro the kind of alarm synchronization you’re hoping for. Even in the latest Matter specification (1.4.x), there is no application cluster for an alarm/security system:
- no alarm panel device type,
- no alarm states (armed_home, armed_away, disarmed, triggered),
- no arm/disarm commands,
- no concept of a “central alarm control panel”.
Matter does support things like Door Lock, contact/occupancy sensors and various safety sensors (smoke, CO, etc.), but these are just individual devices. There is no standardized “alarm_control_panel” equivalent that could mirror Home Assistant’s alarm entity. Because of that:
- Home Assistant cannot expose its alarm_control_panel to Matter in a standardized way,
- NSPanel Pro cannot act as a true alarm panel via Matter,
- Matterbridge cannot fix this, since it only maps existing HA entities to existing Matter clusters.
So if you currently rely on SonoffLAN for alarm synchronization with NSPanel Pro, that’s not a temporary workaround = it’s effectively the only architecture that actually supports this use case today. Matter won’t change that unless the standard itself gains a dedicated alarm/security system cluster in the future.
NSPanel Pro does expose a MQTT entity like select.*_security_mode , but this is only a local mode selector, not a real alarm interface. It doesn’t publish alarm states and it doesn’t react to Home Assistant alarm commands.
That’s why your attempt to sync NSPanel Pro with Alarmo or HA automations didn’t work — the panel simply doesn’t expose its internal alarm logic over MQTT.
Only SonoffLAN can sync the alarm, because it uses the native eWeLink API where the full alarm functionality is actually available. Matter won’t fix this either, since the Matter standard has no alarm/security system cluster at all.
If eWeLink ever added full alarm support to MQTT, NSPanel Pro could synchronize with Alarmo and HA exactly the way you expect. But this would require major firmware changes, and eWeLink clearly isn’t moving in that direction. That’s understandable — NSPanel Pro was never designed to be a Home Assistant alarm panel. Everything eWeLink already provides for HA users is, frankly, more than generous. I’ll stop here, because the rest of the explanation probably wouldn’t be something you’d enjoy hearing.
The reason it “works well with SonoffLAN” is simply because SonoffLAN talks to NSPanel Pro using the native eWeLink API, where the full alarm subsystem actually exists. MQTT and Matter don’t have access to that alarm logic at all (Matter doesn’t even have an alarm cluster), so they can’t synchronize the alarm the way SonoffLAN can.