I successfully used Meross with the chamberlain opener, by wiring it directly to the switch under the button.
If you open up the wired chamberlain wall switch, you’ll see there’s an SPST momentary contact button soldered onto the motherboard.
When you push the button it closes the two contacts on the left side of the switch. You can test this with a continuity or resistance test setting on your multimeter.
I soldered an additional pair of wires, one to each of these contacts, and then connected them to the Meross. In essence, when you trigger the Meross it “pushes” the button by closing the circuit.
I successfully used Meross with the chamberlain opener, by wiring it directly to the switch under the button.
If you open up the wired chamberlain wall switch, you’ll see there’s an SPST momentary contact button soldered onto the motherboard.
When you push the button it closes the two contacts on the left side of the switch. You can test this with a continuity or resistance test setting on your multimeter.
I soldered an additional pair of wires, one to each of these contacts, and then connected them to the Meross. In essence, when you trigger the Meross it “pushes” the button by closing the circuit.
Completely bypassed the Chamberlain nonsense.
Hope this helps. Sorry no pix.