The easiest way to control the rolling door via cellphone:
Weld two lines at two sides of each button of the controller, and in parallel to the NO and Public (like the picture)

Description:
Inching: Press Button A to open the relay, it would be cut off after o.7 seconds. The other is the same
Self-Locking: Press A to open the relay, then A again to switch off. The other is the same
Interlock: Press A to open the relay, then press B to cut off the A, B open. (It could only keep one relay on among A, B, C, D button )