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.
Best Fit
- 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.
Key Specifications
| Serial Ports | 2 x RS232 / RS485, depending on SKU |
| Wireless | 802.11 b/g/n 2.4 GHz, AP / STA / AP+STA |
| Ethernet | 10/100Base-T RJ45, auto MDI/MDIX |
| Power | 5 to 36 VDC, terminal or DC jack |
| Size | 84 x 70 x 25 mm |
Ordering 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.
