Why multi-device sites become difficult to network
A production cell or machine room rarely contains only one device. PLCs, HMIs, energy meters, variable-frequency drives and sensors may all need to share a common uplink, while some devices still communicate through serial links. If every device requires a separate communication box, the cabinet quickly becomes difficult to wire, document and maintain.
One router for several local connections
Tespro TR-244 is designed for these mixed industrial networks. It supports 2G/3G/4G cellular connectivity, one WAN and four LAN 10/100 Mbps Ethernet ports, Wi-Fi 4, two RS485 ports, one RS232 port and four configurable GPIO channels. That combination makes it possible to keep several local Ethernet devices online while also integrating serial equipment and basic digital signals.
From field data to a remote platform
The router can work with protocols such as Modbus RTU/TCP, BACnet, OPC UA and common power-meter protocols, while upstream data can be sent through MQTT, HTTP/HTTPS, TCP or UDP. In practice, this means a site can collect data from different equipment types and forward only the required information to a cloud platform, SCADA server or customer backend.
Example application
A small manufacturing line may have two PLCs, one HMI, one industrial camera controller and several RS485 energy meters. The Ethernet devices can use the LAN ports, the meters can share an RS485 bus, and 4G provides the external connection when the factory network is unavailable or intentionally separated. The router can also be remotely maintained through TesproOS, reducing the number of on-site service visits for network configuration.
Best-Fit Application
Users searching for a “4G industrial router with multiple LAN ports and RS485” usually have a concrete integration problem. Content should answer that problem directly: TR-244 is suitable when a project needs multiple wired device connections, serial integration, cellular backhaul and centralized management in one industrial router.
FAQ
Does TR-244 support link backup?
Yes. The product supports dual-SIM or eSIM options and can use multiple uplink methods to improve network availability.
Can TR-244 send data directly to an IoT platform?
Yes. It supports common upstream communication methods including MQTT, HTTP/HTTPS, TCP and UDP.
How many local devices can TR-244 connect?
The router provides multiple Ethernet LAN ports together with RS232, dual RS485 and configurable GPIO, so several IP and serial devices can share one managed industrial uplink.
Is TR-244 useful for retrofit factory projects?
Yes. Its combination of Ethernet and serial interfaces makes it practical for sites that need to keep existing PLCs, meters or controllers while adding cellular connectivity.
Can TR-244 be managed remotely?
Yes. TesproOS supports remote configuration and maintenance functions, helping service teams manage distributed installations without visiting every site for routine network changes.
