I did this. Bought a LiftMaster 883LM button for mine, and soldered an extra wire to the actual pushbutton contact inside. This was cheap so I wasn't really wor

I did this. Bought a LiftMaster 883LM button for mine, and soldered an extra wire to the actual pushbutton contact inside. This was cheap so I wasn't really worried about breaking it, plus it is much simpler (easier to solder) than the "big" button that has an LCD and motion sensor. Bonus is I have an extra button to control the door mounted at the front now. I did this about 8 years ago, and hooked it to an Insteon network, which is ultimately connected to my HomeAssistant setup. If I was doing it today I'd probably do the same soldering but wire it to something I could run tasmota on (and control via mqtt).