First project. Gate control from phone with HA

Hello there,
First time writing in this community forum and i hope i choose topics and tags correctly.
Right now i have Bft deimos 500 gate opener and planning to add Shelly 1 to it.
The question would be:

  1. Is this good relay switch to connect to this gate
  2. And how would i need to connect Shelly 1 to BFT gate opener.

The manual for btf:

Quick search brings this up:

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