






🚀 Elevate Your IIoT Game with Secure, Smart, and Stable Connectivity!
The USR-N540 is a high-performance 4-port RS485 to Ethernet converter and MQTT Modbus gateway designed for industrial IoT applications. Featuring robust SSL/TLS encryption, a powerful 400MHz Cortex-M7 processor for edge computing, and wide voltage redundant power supply, it ensures secure, reliable, and efficient data transmission. Compatible with major IoT platforms and supporting Modbus protocol conversion, it’s engineered to streamline your network communication with maximum uptime and minimal latency.




| Brand | PUSR |
| Manufacturer | PUSR |
| Model | USR-N540 |
| Model Name | USR-N540 |
| Package Dimensions | 32.5 x 20.1 x 8 cm; 1.21 kg |
| Item model number | USR-N540 |
| Batteries Included | No |
| Batteries Required | No |
| Number of Ports | 4 |
| Manufacturer | PUSR |
| Item Weight | 1 kg 210 g |
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