Y201-W Serial to Wi-Fi Converter
Y201-W is the Wi-Fi model in the Y201 mini DTU family.
- Channels
- 2 serial ports; Socket A and B per port
- Interfaces
- 2 × RS232 or RS485 (SKU-dependent); Wi-Fi SMA antenna
- Protocols
- TCP, UDP, HTTP, MQTT; Modbus RTU-to-TCP gateway
- Power supply
- 5–36 VDC
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
Y201-W is the Wi-Fi model in the Y201 mini DTU family. It bridges two serial ports to wireless networks and is designed for compact cabinets, instruments and controllers where adding another Ethernet cable is inconvenient. The built-in Web UI provides local configuration.
Typical applications
- One or two serial devices that need Wi-Fi data access.
- Retrofit cabinets where wired LAN is unavailable or inconvenient.
- RS232 or RS485 devices that need TCP, UDP, HTTP, MQTT or Modbus TCP access.
Key Features
- Two serial ports, with RS232 or RS485 versions available.
- Wi-Fi AP, STA and AP+STA modes for commissioning and operation.
- Socket A and B for each serial port, suitable for multi-center data access.
- TCP server/client, UDP server/client, HTTP client and MQTT client.
- Modbus RTU to Modbus TCP conversion, heartbeat, auto reconnect and upgrade support.
How it works & selection
Selection notes
Choose RS232 or RS485 according to the connected devices. If you need two serial channels with both Wi-Fi and RJ45 Ethernet in one larger enclosure, compare it with Y202-W.
Technical specifications
| Channels | 2 serial ports; Socket A and B per port |
|---|---|
| Interfaces | 2 × RS232 or RS485 (SKU-dependent); Wi-Fi SMA antenna |
| Protocols | TCP, UDP, HTTP, MQTT; Modbus RTU-to-TCP gateway |
| Power supply | 5–36 VDC |
Signals and communication
| Product type / topology | Dual-serial Wi-Fi DTU |
|---|---|
| Channels | 2 serial ports; Socket A and B per port |
| Frequency band | 2.4 GHz Wi-Fi; AP / STA / AP+STA |
| Interfaces | 2 × RS232 or RS485 (SKU-dependent); Wi-Fi SMA antenna |
| Protocols | TCP, UDP, HTTP, MQTT; Modbus RTU-to-TCP gateway |
| Functions | Web UI, AT commands, LAN discovery, remote upgrade, heartbeat, and automatic reconnect. |
Electrical
| Power supply | 5–36 VDC |
|---|---|
| Power consumption | 55 mA @ 12 V typical |
Mechanical and environment
| Dimensions | 74 × 27 × 15.6 mm |
|---|---|
| Mounting | Side-tab mounting or cabinet internal fixing |
| Environment | −40 to +85 °C; 5–95% RH, non-condensing |
Package & resources
Package contents
1 x Y201-W device, electronic documentation, warranty information. Optional accessories: SMA antenna, serial cable harness, power adapter, DIN mounting accessories.
