EasyIO FD-20i 20-Input Expansion Module (10 DI, 10 UI)

EasyIO FD-20i - 20 Input Expansion Module

The EasyIO FD-20i is an input expansion module designed to add I/O points to controllers in the FS, FG+, and FW series within the EasyIO ecosystem.

The device provides 20 input points, including 10 Digital Inputs (DI) and 10 Universal Inputs (UI), allowing for signal acquisition from a variety of sensors and peripherals in the BMS system. The UI inputs support resistive (10K/20K) or dry contact signals, suitable for HVAC applications such as device status readings, temperature sensors, or on/off signals.

The FD-20i supports BACnet MSTP or Modbus RTU protocols (optional), enabling easy integration into existing control systems via RS485 connectivity. This is the optimal solution when expanding the number of measurement points without replacing the main controller.

With its compact design, low power consumption, and high compatibility, the FD-20i increases the flexibility and scalability of BMS systems in building, factory, and HVAC projects.

Key Specifications

• Power Supply: 24V AC/DC
• Processor: ARM Cortex-A0 – 48MHz
• Flash: 256KB
• RAM: 32KB
• Communication:
  • 2 x RS485
  • Supported Protocols:
  • BACnet MSTP Server
  • Modbus RTU Slave
• Digital Input (DI): 10 x DI
• Universal Input (UI): 10 x UI
  • Resistance Support: 10K / 20K
  • Dry Contact Support