Amazon.com: 4G VPN Router, Industrial Dual Sim 4G LTE WiFi Router 3G/4G Yeacomm YF325 Wireless Modem Router Unlocked with Sim Card Slot, External Antenna Cellular Modem in North/South America, NOT for Verizon :
Industrial 4G LTE WiFi Router with SIM Card Slot, 4G VPN Router, Indusrial Cellular Router | LINOVISION US Store
Amazon.com: KuWFi 4G LTE Router 1200Mbps Dual Band Gigabit WiFiCellular VPN Router with External Antenna US 2GB Free Data 4G Wireless LTE CPE No Contract or SIM Card Required Plug and Play
StrideLinx Industrial VPN Router: wired + 4G US LTE AT&T Internet connectivity (PN# SE-SL3011-4G) | AutomationDirect
H685 4G Router With Ethernet | 4G Router External Antenna