Hi - I’ve got a double garage with 2 Hormann Promatic garage door openers. I’d like to be able to open these using either my phone or Alexa/Siri (I have both devices).
I’m thinking something like the Meross receiver kit (I know I’d need one per door)
shop.meross.com
However all of the kits seem to have 2 wires to the unit and a separate power supply whereas the current radio remote receiver plugs into the opener with 3 wires
I’m guessing that as the opener must also power the receiver I only need to connect the switch wires from the Meross to the opener but I have no idea which 2 are the switch wires.
Can anyone help as I don’t really want to buy the Meross receivers until I know how to wire them up properly.
Also, does anyone know if you can still have a manual switch in the garage on the wall AND a smart receiver??
Thanks!!
I’m thinking something like the Meross receiver kit (I know I’d need one per door)

Meross Smart Garage Door Opener, MSG100
You can control your devices hands-free, just give voice commands to turn on/off the connected devices. Works with Apple HomeKit, Siri, Amazon Alexa, and Google Assistant.

However all of the kits seem to have 2 wires to the unit and a separate power supply whereas the current radio remote receiver plugs into the opener with 3 wires
I’m guessing that as the opener must also power the receiver I only need to connect the switch wires from the Meross to the opener but I have no idea which 2 are the switch wires.
Can anyone help as I don’t really want to buy the Meross receivers until I know how to wire them up properly.
Also, does anyone know if you can still have a manual switch in the garage on the wall AND a smart receiver??
Thanks!!