SENSOPER MC-EX-ND8 Digital Input module is an expansion module that can be used with MC-CPU-CM4-Gx CPU module. This module was implemented for read Digital Input signals. This expansion module includes a high speed 1.7 Mhz I2C interface with an address configurable DIP switches to establish communication with a CPU module. MCP23008 I2C port expanding IC supports up to eight inputs in this module. All inputs were Internal optically isolated as a protection feature. This module, expansion is supported by board-to-board connector with 40 pins.