A: 1 / 3 button(s)  wall switch has 1 / 3 channels for 1 / 3 different signal paths,
        which theoratically can control multiple doors as long as the
        openers can receive the signal, so it can control at least 1 / 3 different
        doors at the same time.

2, Q: Can your wall switch fit with other openers from other suppliers?
    
    A: Yes, as long as the opener's frenquency is 433.92Mhz and with open code.


3, Q: Can I get samples from you?

   A: Yes, please contact with our sales.