The EXB-D22C2 i-Function Board is based on the LEGO MODE modular design. It supports 8-channel GPIO input and 8-channel GPIO output, enabling multi-channel signal acquisition and control. The board features two USB ports and three serial port extensions for strong compatibility. Wide voltage range of 9–36V, allowing it to operate in complex power environments. Designed with through-hole mounting, it is easy to integrate and is compatible with CES-1602 and CES-1901 mainboards as well as L200/L300 profiles.

★ Modular Design — LEGO MODE for flexible multi-scenario use
★ GPIO 8-in and 8-Out
★ 2x USB, and 3 Serial Port Expansions
★ Specification Download
| Parameter | Description |
| Input Interface | GPIO 8-in and 8-Out |
| Profile | L200,L300 |
| Reserved functions | 2 USB, and 3 serial port expansions |
| Power Supply | 5V DC from Motherboard Pin |
| Power Consumption | < 1W (typical) |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -20°C to +70°C |
| Dimensions | / |
| Mounting Method | Screw Holes |