DIN-Rail mounted RS485 industrial modems with sim card slot USR-DR504 with global bands can realize the data transmission between RS485 and 4G Network.
USR-DR504-G
Modem 4G/LTE a RS485 modbus RTU, TCP/UDP, HTTP, SMS, MQTT de 50Mbps y picos de 150Mbps Maximo de 2 TCP Soporta Nube de PUSR