Athom 4 channels relay is amazing! a huge upgrade from Shelly 1. 

The Red device on the back is a locking clip for the din rail. Click it on and pull the red lock out to release - great channel good vids

can i suggest a video on using nmap or other similar addon, to have automatically the new devices connected to the network appear in an home assistant panel, to easy find their ip address or even check if someone found our wifi settings and is in our network? thanks