This article describes if a SIM card is needed if only the Ethernet outlet is used.
APPLICABLE PRODUCTS
Netbiter EC350, Netbiter EC360
QUESTION
If I only use the Ethernet outlet do I need a SIM card?
ANSWER
No, you do not.
You can set up the Netbiter to access internet without any SIM card. But of course, you will have to connect it to a WAN Internet connection or a 4G router with cable to the WAN-port of the Netbiter device.