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MiniLink Series Guide
MiniLink devices are palm-sized industrial communication blocks used for retrofitting existing RS485/RS232/TTL panels without changing cabinet layout. The family combines Y201 mini DTUs (G/W/R/L) and Y301 miniature I/O modules (110/200/020) under a unified mechanical envelope, firmware template, and configuration workflow.
Why MiniLink
- Unified Mechanics – 77 mm class lightweight enclosure with DIN clip + panel ears, shared terminal layout, and reload button on every model.
- Flexible Uplink Options – LTE Cat1, dual-band Wi-Fi, 10/100M Ethernet, or LoRa for wide-area telemetry while reusing RS485/RS232 wiring.
- Modbus-Centric Firmware – Transparent tunneling, Modbus polling, JSON packing, remote AT commands, and OTA/USB upgrades follow the same playbook.
- Edge-Ready Automation – Built-in socket manager, MQTT/HTTP clients, and programmable timers/pulse counters reduce PLC workload.
Model Lineup
| Model | Category | Serial Interface | Uplink / I/O Focus | |
|---|---|---|---|---|
 | Y201-G | Mini DTU | RS485/RS232/TTL | LTE Cat1 cellular |
 | Y201-W | Mini DTU | RS485/RS232/TTL | 2.4G/5G Wi-Fi STA/AP |
 | Y201-R | Mini DTU | RS485/RS232/TTL | 10/100M Ethernet |
 | Y201-L | Mini DTU | RS485/RS232/TTL | LoRa long-range mesh |
 | Y301-110 | Mini I/O | RS485/RS232 (optional) | 1×DI + 1×DO |
| Y301-200 | Mini I/O | RS485/RS232 (optional) | 2×DI monitor |
| Y301-020 | Mini I/O | RS485/RS232 (optional) | 2×DO control |