Y402-44-L Wireless I/O Sync System Manual

Refer to the detailed specification for electrical ratings, pinouts, and installation requirements: Y402-44-L Specification.

Overview

The Y402-44-L is a one-to-many wireless I/O synchronization system with 4DI/4DO on the master and slaves. Using sub-GHz LoRa, it mirrors input state changes between the master and multiple slaves for license-free remote control.

Basic Setup

1. Power all nodes with a stable DC supply per the datasheet.
2. Pair factory-matched units; add new slaves following the pairing method in the specification.
3. Wire dry-contact inputs to DI terminals; avoid applying active voltage signals.
4. Connect relay outputs via NO/COM/NC to the controlled loads.
5. Install antennas vertically and keep them away from large metal objects to maximize range.

Safety Notes

• Use certified power supplies and correct polarity.
• Avoid explosive, high-humidity, or dusty environments.
• Keep antennas within the specified operating band to ensure link reliability.