Does the SIM have a PIN? S. https://support.zyxel.eu/hc/de/articles/4402176072850-LTE3301-M209-Fehlerbehebung

Hello! Yes, he did. Greetings Zyxel Switzerland

The device has 2 SMA connections, so you can simply use antennas with SMA, e.g. this one: https://www.digitec.ch/de/s1/product/delock-ltehspagsm-antenne-2x-sma-stecker-mobilfunk-antenne-netzwerk-zubehoer-5833644. But to be honest, you won't be happy with 5m cable. The longer the cable, the greater the attenuation of the cable, the less the antenna will do. It would be better to go the other way, i.e. LTE3301 closer to the LTE source and then via LAN cable to the router / switch. Or you can take the luxury route and buy an outdoor LTE modem Zyxel LTE7240.

Hello C.Rubattel, It is possible to mount it on a wall. You can find out exactly how this works in the Zyxel User Guide: ftp://ftp.zyxel.com/LTE3301-Q222/user_guide/LTE3301-Q222_V1.00.pdf I hope I was able to help you quickly. If you have any further questions, please do not hesitate to contact me! Greetings Andreas