A 4G LTE communicator that takes over an existing POTS alarm panel and puts it on the Alarm.com platform. A monitoring upgrade path, with nothing exposed locally.
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A cellular signalling device for the Alarm.com platform. It adds a monitoring path rather than a local interface, so it exposes nothing for Home Assistant to read or control.
These exist to get alarm signals to a monitoring centre, which is a different job from automation and a reasonable one. They are listed so the range is complete. The thing to understand on a takeover is that fitting one does not bring the panel's sensors into Home Assistant: it brings them to Alarm.com. Getting the zones locally needs an interface to the panel itself.
- Home Assistant with local sensors, for automation and notification
- A monitored panel of the client's choosing, kept deliberately separate from the automation system
It attaches to an older panel that was built to dial a central station over a phone line and replaces that path with AT&T LTE, which brings a legacy system onto the Alarm.com platform without replacing the panel.
For a building with a working, well-installed panel and no phone line left, that is a genuinely economical takeover, and the reason these sell.
It also fixes the monitoring path only. The panel’s zones remain the panel’s, reported upward to Alarm.com, and there is no local interface added for anything else to read. Where the goal is to get an existing panel’s sensors into Home Assistant rather than to keep it monitored, a serial or bus interface to the panel itself is the thing to look for.
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