Looking for simple inexpensive SDWAN device that supports SIM card LTE and can form tunnels to a controller (hub and spoke fashion) to allow access of remote LAN from the hub.

Im looking to use this device to manage a remote router that has satellite connection. The idea is when the satellite modem goes offline I should be able to login to the router through the SDWAN appliance. Another use case is to connect this device to UPS so I can manage the UPS. What are the options? Thank