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IoT, RS485 HUB
USR‑HUB201S-DC Industrial Grade RS485 HUB
SKU: USR‑HUB201S-DC
₹3,658.00
₹3100 + 18% GST
incl. GST
Availability: Available on backorder
Estimated Delivery: Estimated delivery in 2 to 4 weeks
For bulk orders or B2B inquiries, email us: sales@empere.in
USR-HUB201S-DC Industrial Grade RS485 Hub (2 Master to 1 Slave)
2 Master to 1 Slave | 3kV Optical Isolation | ±15kV ESD & 600W Surge | DC 9–40V Supply
The USR-HUB201S-DC is an industrial-grade dual-master RS485 hub designed to bridge two RS485 master controllers to a single RS485 slave loop with complete electrical isolation. Delivering 3kV optical isolation (2500Vrms), ±15kV ESD protection, and 600W lightning surge suppression per line, it actively eliminates ground loops, mitigates voltage differences between differing ground potentials, and enables redundant or dual-controller access to critical PLCs, instrumentation, and Modbus networks.
Channel Topology
2 Master to 1 Slave
2 Master to 1 Slave
Isolation Rating
2500Vrms / 3kV Optical
2500Vrms / 3kV Optical
Surge & ESD Rating
±15kV ESD | 600W Surge
±15kV ESD | 600W Surge
Operating Voltage
DC 9V to 40V (500mA)
DC 9V to 40V (500mA)
Transmission Speed
300 bps to 115.2 Kbps
300 bps to 115.2 Kbps
Channel Capacity
128 Nodes / Channel
128 Nodes / Channel
| Product Model | USR-HUB201S-DC (USR-HUB201S) |
| Device Classification | Industrial Dual-Master Isolated RS485 Hub / Repeater / Combiner |
| Interface Standard | TIA/EIA RS-232 and RS-485 compliant via heavy-duty industrial screw terminal blocks |
| Channel Configuration | 2-Channel RS-485 Master Inputs (Bus 2) to 1-Channel RS-485 Slave Output (Star Bus Architecture) |
| Node Support & Cascading | Up to 128 nodes supported per RS485 channel; supports multi-node cascading and master-arbitrated communications |
| Flow Control & Data Handling | Hardware auto-sensing data direction control; integrated serial port buffering; protocol-transparent (Modbus RTU / ASCII / custom) |
| Isolation & Surge Suppression | 3kV optical isolation (2500Vrms, 500V DC continuous DC/DC isolation); ±15kV ESD protection; 600W lightning surge suppression per line |
| Transmission Range & Media | 0 to 3 km (adaptive based on 115.2 Kbps down to 300 bps baud rates) via twisted pair or shielded cabling |
| Status Diagnostics | 3 integrated LED status indicators: Power (POW), Data Transmit (TXD), and Data Receive (RXD) |
| Mechanical Dimensions | 100 x 54 x 32 mm with integrated rear clamp and positioning mounting holes |
| Operating Environment | Temperature: -20°C to +75°C; relative humidity: 5% to 95% (non-condensing) |
| Target Applications | Dual-master PLC networking, redundant SCADA and HMI integration, industrial automation, multi-host monitoring, instrumentation, and isolated bus mediation |
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