Option CloudGate M2M Cellular Gateway with Embedded Global 3G/4G/LTE Modem (Power/Antennas Sold Separately)
Industrial 4G LTE Modem Router, Serial to Cellular Modem USR-G781-AU
4G LTE Modem - LB2120
Amazon.com: NETGEAR 4G LTE Broadband Modem - Use LTE as Backup Internet Connection, Unlocked, Works with Any Mobile Network Provider (LB2120) : Electronics
Industrial with Ethernet + 4G/LTE connection
AliExpress
SIM7600G-H 4G USB Dongle | The Pi Hut
Wired-Ethernet (RJ-45) USB Modem Mobile Broadband Devices for sale | eBay