Y202-W 2-Port Serial to Wi-Fi Converter
Y202-W is a two-port DTU for cabinets that need serial access over Wi-Fi, while still keeping an RJ45 Ethernet option for setup or wired networking.
- Channels
- 2 serial ports; Socket A and B per port
- Interfaces
- 2 × RS232 / RS485; 2.4 GHz Wi-Fi; 10/100Base-T RJ45
- Protocols
- TCP, UDP, HTTP, MQTT; Modbus RTU-to-TCP gateway
- Power supply
- 5–36 VDC; terminal or DC jack
Price for the selected configuration.
Shipping & Tax: Shipping is quoted separately and paid before dispatch. Import duties, taxes, customs fees and destination charges are paid by the customer.
Overview
Y202-W is a two-port DTU for cabinets that need serial access over Wi-Fi, while still keeping an RJ45 Ethernet option for setup or wired networking. It is useful when two field devices need to be brought online together, especially in retrofit sites where pulling new network cable is awkward.
Typical applications
- Two PLCs, meters, relays or controllers sharing one Wi-Fi uplink.
- Retrofit cabinets where Ethernet wiring is limited.
- Maintenance scenarios that benefit from AP mode local access.
Key Features
- 2 independent RS232/RS485 serial channels, selected by variant.
- Wi-Fi AP, STA and AP+STA modes, plus 10/100Base-T RJ45.
- Socket A and B per serial port for concurrent data paths.
- TCP, UDP, HTTP, MQTT, JSON upload and Modbus RTU to TCP conversion.
- Web UI, LAN discovery, micro-USB console, remote AT and HTTP OTA.
How it works & selection
Selection notes
Choose 2 RS232, 2 RS485, or 1 RS232 + 1 RS485 according to the field devices. For a single serial device, Y201-W is smaller and simpler; for four ports, use Y204-R if wired Ethernet is acceptable.
Technical specifications
| Channels | 2 serial ports; Socket A and B per port |
|---|---|
| Interfaces | 2 × RS232 / RS485; 2.4 GHz Wi-Fi; 10/100Base-T RJ45 |
| Protocols | TCP, UDP, HTTP, MQTT; Modbus RTU-to-TCP gateway |
| Power supply | 5–36 VDC; terminal or DC jack |
Signals and communication
| Product type / topology | 2-port serial-to-Wi-Fi/Ethernet DTU |
|---|---|
| Channels | 2 serial ports; Socket A and B per port |
| Frequency band | 2.4 GHz Wi-Fi; AP / STA / AP+STA |
| System configuration | 2 RS485, 2 RS232, or 1 RS232 + 1 RS485 variants |
| Interfaces | 2 × RS232 / RS485; 2.4 GHz Wi-Fi; 10/100Base-T RJ45 |
| Protocols | TCP, UDP, HTTP, MQTT; Modbus RTU-to-TCP gateway |
| Functions | Web UI, LAN discovery, micro-USB console, remote AT, and HTTP OTA. |
Electrical
| Power supply | 5–36 VDC; terminal or DC jack |
|---|---|
| Power consumption | 55 mA @ 12 V Wi-Fi idle |
Mechanical and environment
| Dimensions | 84 × 70 × 25 mm |
|---|---|
| Mounting | DIN-rail-ready housing |
| Environment | −40 to +85 °C; 5–95% RH, non-condensing |
| Protection | Reverse-polarity, surge clamping, and dual watchdog |
Package & resources
Package contents
1 x Y202-W DTU 1 x DB9 male breakout for COM1 1 x 3-pin pluggable terminal for COM2 and power 1 x Wi-Fi SMA antenna DIN-rail clip, quick-start card, warranty information Optional: `12 V` power adapter, USB console cable
