Connecting lift to garage door opener is really simply, just connect 2 wires to "P/B" and "GND" terminals and plug in the power, and that's it.
The link has a photo to show you how to connect lift to your garage door opener:
We've tested the rage and it's about 50 meters.
Please take a look the result here:
Don't see the answer to your question? Ask the project creator directly.