Meross
Meross MSG100 Smart Garage Door Opener
- HACS component
- Local control
- Wi-Fi
Prices verified September 2026
Our verdict
A £35-ish reed-switch-and-relay retrofit that clips to almost any existing garage door motor rather than replacing it — the honest way in for anyone who doesn't want Chamberlain's MyQ walled garden. Skip Meross's own cloud app in Home Assistant and install the community meross_lan integration instead: it talks to the device over your LAN, so garage door state and open/close commands keep working even if Meross's servers have a bad day, which matters a lot more for a garage door than it does for a smart bulb.
What can Home Assistant control on the Meross MSG100 Smart Garage Door Opener?
meross_lan discovers the device on your LAN (falling back to cloud relay only if local discovery fails) and exposes it as a cover entity with open/close/stop and a door-state binary sensor sourced from the physical reed switch, not just the last command sent — so HA reflects reality even if someone opens the door manually or the relay pulse doesn't fully close it. Because control is local by default, automations built on this entity (e.g. 'close if still open 10 minutes after sunset') keep working through a Meross cloud or internet outage, which is the main reason to pick this device over Meross's own HomeKit-branded MSG200HK models — those push everything through Meross's cloud with no local fallback.
Specs
| power | Mains-powered (UK plug), Wi-Fi 2.4GHz only |
|---|---|
| control | Single-door reed-switch garage door controller; MSG200 sibling model controls up to 3 doors from one unit |
| sensing | Magnetic reed sensor reports actual door position (open/closed), not just relay-trigger state |
| app features | Auto-close timer, open/close notifications, Alexa/Google Assistant/SmartThings voice control via Meross's own cloud skills |
| compatibility | Works with most chain/belt/screw-drive garage door openers via a dry-contact relay wired into the opener's existing wall-button terminals |
Frequently asked questions
- Does the Meross MSG100 Smart Garage Door Opener work with Home Assistant locally?
- Yes. The Meross MSG100 Smart Garage Door Opener is controlled locally in Home Assistant through a community integration installed through HACS (meross_lan), so it keeps working if your internet connection or the Meross cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Meross MSG100 Smart Garage Door Opener use, and do I need a hub?
- The Meross MSG100 Smart Garage Door Opener uses Wi-Fi. To pair it with Home Assistant you need no hub — it joins your Wi-Fi network directly. Meross's own hub is not required when you integrate through a community integration installed through HACS (meross_lan).
- How much does the Meross MSG100 Smart Garage Door Opener cost in the UK?
- The lowest price we have listed for the Meross MSG100 Smart Garage Door Opener is £34.99 at Amazon UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.