Two independent serial ports, with RS232/RS485 combinations selected by SKU and Socket A/B per port
Y202-W 2-Port RS232/RS485 to Wi-Fi Gateway
2 Ports Serial to Wi-Fi Converter
Y202-W links two RS232/RS485 serial ports to 2.4 GHz Wi-Fi, with AP/STA modes, Modbus RTU-to-TCP conversion and JSON upload for cabinet retrofits.

Key Features
Wi-Fi-only uplink using 802.11 b/g/n at 2.4 GHz, with AP, STA and AP+STA modes; no RJ45 port
Modbus RTU-to-TCP conversion, HTTP client, MQTT publishing and JSON upload for SCADA or cloud reporting
84 × 70 × 25 mm enclosure, 5–36 VDC input, Web UI setup and remote AT/HTTP OTA maintenance
Specifications
Power Supply
- Voltage
- DC 5~36V
- Input Style
- Terminal or DC jack
- Typical Current
- 55 mA @ 12V
- Operating Temperature
- -40°C ~ +85°C
- Humidity
- 5% ~ 95% RH, non-condensing
Serial Interfaces
- Ports
- 2
- Type
- 2 x RS232 / RS485 depending on SKU
Wireless
- Standard
- 802.11 b/g/n 2.4 GHz
- Modes
- AP / STA / AP+STA
Software
- Protocols
- TCP / UDP / HTTP / MQTT
- Gateway Function
- Modbus RTU to Modbus TCP
- Maintenance
- Web UI, LAN discovery, micro-USB console, remote AT
- Value Added Functions
- JSON uploader, registration packet, heartbeat, HTTP OTA
Mechanical
- Dimensions
- 84 x 70 x 25 mm
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