ETREL INCH HOME model has an optional WIFI connection.
Make sure your router uses AES encryption. Older routers used TKIP.
If router does not support AES encryption, then INCH will not be able to connect to this network. You will just see it on list.
More about encryption : https://www.howtogeek.com/204697/wi-fi-security-should-you-use-wpa2-aes-wpa2-tkip-or-both/