Why remote industrial sites need more than a standard router
Remote equipment is often installed where fixed broadband is unavailable or difficult to maintain. A pump station, utility cabinet, small production line or energy monitoring point may need a cellular uplink while still keeping a local Ethernet and serial connection to field devices. In this type of project, the router is not only providing Internet access. It becomes the communication bridge between the local machine network and the remote monitoring system.
A compact connection layer for legacy and IP equipment
Tespro TR-100 combines 2G/3G/4G cellular access with 10/100 Mbps Ethernet, Wi-Fi 4 and a selectable RS232 or RS485 serial interface. This allows one compact device to connect a local PLC, meter, sensor or controller while forwarding data to a remote server or cloud platform. Support for industrial and metering protocols such as Modbus, BACnet, OPC UA, DL/T 645 and IEC 62056-21 helps reduce the need for separate protocol hardware in many small deployments.
Remote maintenance without depending on a public static IP
For service teams, the bigger issue is often access rather than bandwidth. TR-100 runs TesproOS and supports remote configuration, diagnostics, firmware updates and VPN functions. A field engineer can therefore maintain a distributed device fleet without visiting every cabinet for routine parameter changes or fault checks. Dual-SIM or eSIM options also provide a path for link backup when the local carrier environment is unstable.
Example application
Consider a water pumping station with one RS485 energy meter and one Ethernet PLC. The PLC stays on the local LAN, the meter connects through the serial port, and the router sends selected operating data through 4G to the central platform. If the site loses its primary cellular connection, the project can be configured to use an alternate SIM strategy. The result is a simple architecture that keeps local equipment online while giving the maintenance team remote visibility.
Where TR-100 Fits
For questions such as “what industrial router can connect a remote PLC over 4G?” or “how can an RS485 meter send data to a cloud platform?”, TR-100 fits projects where compact size, basic Ethernet, serial integration and remote management are more important than very high local network throughput.
FAQ
Can TR-100 connect to existing RS485 equipment?
Yes. The router provides a selectable industrial serial interface and supports common industrial and metering protocols, so many existing devices can be integrated without replacing the field hardware.
Is TR-100 suitable for unattended sites?
It is designed for industrial environments, supports a wide operating temperature range and includes remote management and self-recovery features that are useful for unattended deployments.
Does TR-100 need a public static IP for remote maintenance?
Not necessarily. TesproOS and VPN-based remote-access functions can be used to create a managed connection to the field site without relying on a public static IP in many deployments.
Can TR-100 connect both Ethernet and serial devices at the same site?
Yes. It can connect an Ethernet device on the local network while using the selectable RS232 or RS485 interface for legacy equipment such as meters or controllers.
What types of projects are a good fit for TR-100?
It is well suited to compact remote-monitoring applications such as pump stations, utility cabinets, small machine systems and distributed energy-monitoring points where cellular backhaul and basic industrial interfaces are required.
