MPI Gold Network - 4G Failover Router - Lavu and Vend Router
4G Failover Router Wholesale LTE Cellular Modem with Battery
What is a Dual WAN Failover Router? - 4gltefailover
Amazon.com: Teltonika RUT955K031Y0 Model RUT955 Industrial Cellular Router; Dual SIM; 4G LTE (Cat 4), 3G, 2G Connectivity; for use with Verizon; Auto Failover; Auto APN; Up to 100 Wi-Fi Users : Cell