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 :
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Amazon.com: Lubeby Smart USR-G806-G Global Industrial 4g LTE WiFi Router Outdoor M2M Routers with Global Bands X 1 Set : Electronics
CONNECTED IO ER1000-VZ EMU INDUSTRIAL ROUTER LAN WAN 4G LTE Cat 3 w/ 3G Fallback | eBay