Industrial-Grade WiFi Serial Server RS232/RS485 to WiFi Converter | Modbus Gateway | TCP/UDP/MQTT/HTTP Support
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Common Pain Points
Traditional serial-to-wireless solutions often suffer from unstable WiFi connections in industrial environments, short transmission range, complex wiring and power supply limitations, poor protocol compatibility (especially Modbus), high latency or packet loss, weak anti-interference and surge protection, difficult configuration and maintenance, and inability to support flexible networking modes — severely restricting reliable remote monitoring, IoT integration, and deployment in factories, outdoor sites, or harsh conditions.
Solution & Core Features
1.Bidirectional Transparent Transmission — Seamless RS232/RS485 to WiFi conversion with zero-delay transparent data forwarding, supports dual serial ports for parallel device communication.
2.Industrial-Grade Reliability — Dual-core 240MHz high-performance MCU, -40°C~+85°C wide temperature, 5-36V wide voltage input, Class B surge / Class A ESD / Class B EFT protection for harsh environments.
3.Modbus Gateway Expert — Built-in Modbus TCP ↔ RTU bidirectional conversion, perfect for PLC, sensors, inverters, and industrial IoT platforms.
4.Multi-Protocol & Flexible Networking — Supports TCP/UDP/HTTP/MQTT, 4-channel Socket, AP/STA/AP+STA dual modes, long-range WiFi (up to 180m in open area tested), low latency (<1ms average).
5.Easy Setup & Management — Built-in web server for parameter configuration and firmware upgrade, AT command support, dual power interfaces (5mm DC jack + terminal block), compact DIN-rail/wall-mount design.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | Y202-W |
| Serial Ports | RS232 + RS485 (independent) |
| Baud Rate | 2400 ~ 460800 bps |
| Data Bits / Parity / Stop | 7/8 bits, NONE/ODD/EVEN, 1/2 stop bits |
| Wireless Standard | 802.11 b/g/n @ 2.4GHz |
| Transmit Power | 20.5 dBm MAX |
| Wireless Modes | AP / STA / AP+STA |
| Encryption | WPA-PSK / WPA2-PSK / WPA3-PSK |
| Ethernet Port | 10/100M RJ45 auto-negotiation |
| Power Supply | DC 5–36V (DC jack 5.0mm + terminal block) |
| Power Consumption | ~55mA @ 12V |
| Operating Temperature | -40°C ~ +85°C |
| Protection | Surge (Class B), ESD (Class A), EFT (Class B) |
| Dimensions | Approx. 84 × 70 × 25 mm (excluding ears) |
| Processor | Dual-core ARM Cortex-M4, 240MHz |
Application Scenarios
Widely deployed in industrial automation (PLC/inverter/remote meter reading), IoT data acquisition (sensors, smart meters), energy & power substation management, smart agriculture (greenhouse environmental monitoring), water conservancy & environmental protection (pump/valve remote control), smart factory equipment networking, outdoor harsh-site monitoring, and any scenario requiring cable-free, long-range, stable serial-to-WiFi bridging with Modbus/cloud integration.
