Teltonika RUT361 Industrial Cellular Router w/ 4G LTE Cat 6 & Dual ETH

Log into the router's WebUI, navigate to Services > MQTT. Enable the client, enter your broker's address (e.g., test.mosquitto.org:1883), and set authentication if required. In the System > Scheduled Tasks section, create a script using the 'mqtt-pub' command to publish data from internal sensors (like signal strength) or external devices connected via Ethernet. You can define publishing intervals and QoS levels directly within these configuration menus for reliable IoT data transmission.

In the WebUI, go to Network > Interfaces. Ensure both your primary WAN (e.g., Ethernet) and backup WAN (the LTE connection) are configured and enabled. Then, navigate to Network > Routing > Rules and configure a failover rule specifying the metric priority; set a higher metric for the backup interface. The router will automatically switch to the cellular connection if the primary WAN link goes down. You can also use the 'Ping Check' feature under Services to monitor upstream connectivity and trigger failover based on packet loss.

Yes, the RUT361 supports passive Power over Ethernet (PoE) output. You need to provide 9-30 VDC to the router's 4-pin industrial socket. Then, enable PoE output for a specific Ethernet port in the WebUI under Network > Interfaces > LAN (or a custom bridge). Connect your device (e.g., an IP camera) via an Ethernet cable to that port. Ensure the total power draw of the router and the peripheral does not exceed the capacity of your DC power supply, considering the router's own max consumption of 4.7W.