Smart Home Router Serial Port LTE RS485 RJ45 Ethernet to 4G LTE-FDD LTE-TDD 3G WCDMA DTU Server Converter Elfin-EG46 4G Router - AliExpress
Industrial Grade Cellular 4G LTE Modem Router with Support Ethernet Vpn Wifi Sim Card Slot Serial rs232/rs485 Port - AliExpress
Industrial 4G LTE WiFi Router with SIM Card Slot, 4G VPN Router, Indusrial Cellular Router | LINOVISION US Store
LINOVISION Industrial 5G Cellular Router with Dual 5G SIM Cards and RS232/485 IoT Integration,Gigabit Ethernet, WiFi 5G/4G and GPS | LINOVISION US Store
XE1300 4G LTE Portable Router – Aeon Innovations
InHand Networks' CR202 Router | Westward Sales
Amazon.com: NETGEAR 4G LTE Modem with Two Gigabit Ethernet Ports – Instant Broadband Connection | Works with AT&T and Alternate Carriers (LB2120)
USR G808 V2 Cellular Wireless Routers with 5 Ethernet Ports | IOTNVR US