USR IOT Serial Converters & Gateways: A Buyer’s Guide for Pakistan
Connecting industrial equipment to a network usually comes down to one question: does the data just need to pass through to a network (a converter), or does it need local processing, protocol translation, and cloud connectivity (a gateway)? HAT INDUSTRIES helps businesses across Pakistan match the right USR IOT device to the job and source it through established, authorized channels. We’re not an authorized USR IOT distributor or stockist.
Serial-to-Ethernet Converters (TCP232 Series)
These devices do one job well: pass serial data (RS232/RS485) transparently onto an Ethernet network, with Modbus RTU-to-TCP conversion built in.
| Part Number | Ports | Notes |
|---|---|---|
| USR-TCP232-302 | 1× RS232 | Compact, single-port converter |
| USR-TCP232-304 | 1× RS485 | Compact, single-port converter |
| USR-TCP232-306 | RS232 or RS485 or RS422 (selectable) | Flexible single-port option |
| USR-TCP232-410S | 1× RS232 + 1× RS485 | Both ports work simultaneously, Modbus gateway, SSL/TLS |
| USR-N540 | 4× RS485 | Multi-port option for several serial devices |
Common uses: connecting a serial PLC, meter, or scanner to a factory Ethernet network so it can be reached by SCADA or a monitoring system.
IoT Gateways (M-Series)
Gateways go a step further than a converter — they add edge computing, protocol translation, and cloud/MQTT connectivity, so data isn’t just passed through but processed and optimized before it reaches a server.
| Part Number | Interfaces | Key Feature |
|---|---|---|
| USR-M100 | RS232, RS485, Ethernet, Cellular, 2× AI, 2× DI, 2× DO | Edge computing, MQTT to major cloud platforms, SD card data caching |
| USR-M300 | Multiple serial + Ethernet, expandable | Higher-performance edge gateway with Modbus protocol conversion |
Common uses: remote equipment monitoring where sensor data (temperature, on/off status, analog readings) needs to reach a cloud dashboard, with local caching if the connection drops.
Serial-to-WiFi Converters
| Part Number | Ports | Notes |
|---|---|---|
| USR-W610 | 1× Ethernet + serial | WiFi conversion where cabling isn’t practical |
| USR-W630 | 2× Ethernet + serial | Dual-port WiFi option |
Frequently Asked Questions
Should I choose a TCP232 converter or an M-series gateway?
If you just need to get serial data onto a local network or SCADA system, a TCP232 converter is simpler and sufficient. If you need that data to reach a cloud platform, with local processing or caching if the connection drops, an M-series gateway (USR-M100 or USR-M300) is the better fit.
What’s the difference between USR-M100 and USR-M300?
Both are edge IoT gateways, but the M300 is positioned as the higher-performance option with more processing headroom for larger or more demanding data-collection setups. The M100 covers most standard remote-monitoring applications well.
Do these devices support Modbus?
Yes — the TCP232-410S and the M-series gateways both support Modbus RTU-to-TCP conversion, making them compatible with most industrial PLC and SCADA systems already using Modbus.
Which converter should I choose if I have multiple serial devices?
The USR-N540 supports four RS485 ports, making it a better fit than a single-port TCP232 model if you’re connecting several serial devices from one location.
Common Applications
General factory equipment networking, remote equipment monitoring, and PLC-to-SCADA communication across Pakistan.
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