A Mercury single-door PoE controller, powered and networked over one cable. Open Mercury hardware sold under an Alarm.com licence.
Selora does not recommend this device
Alarm.com access control hardware is licensed to an Alarm.com for Business account. The controllers are standard HID Aero and Mercury boards, but as sold their configuration and credential database live in Alarm.com's cloud, with no local API for Home Assistant.
This is the most reversible lock-in in the range, which is worth knowing. HID Aero and Mercury are open controller platforms that many access control vendors build on, so the panels, readers and wiring are not wasted if a client later changes software. What is bought from Alarm.com is the licence and the cloud, not the boards. For an install that needs door state and unlock events in Home Assistant, choose an access platform with a local API or an on-premise controller, and keep the same Mercury or Aero hardware underneath it.
- An access control platform with a documented local API, running on the same Mercury or HID Aero hardware
- Ubiquiti
- For a single door in a home, a Z-Wave or Matter lock Home Assistant drives directly
Mercury’s PoE door controller, which takes power and network from one Cat6 run and so avoids a separate supply at the door.
Reader port 1 accepts a Wiegand reader, an OSDP reader, or expansion modules; reader port 2 is Wiegand only. That asymmetry decides your wiring plan, so read it before laying out a multi-door job.
Mercury is the most widely licensed controller platform in commercial access control, which again means the board outlives the software choice.
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