What signal do I send to open the door?

I can open my main entrance using the Opener by using the app and/or pressing the button on the device itself, but how do use the existing wires to signal open, say using an ESP32. My device is using a digital bus.

I’ve tried simulating a door bell by placing 3.3V on yellow (with green to ground) and by grounding blue (with it defaulting to 3.3V using a pull-up resistor) simulating pressing “open”, but it didn’t work.