The ADAM-3651-AE with I/O Modules 8-ch DI Module is an industrial automation controller manufactured by Advantech. It is an input and output module capable of performing 8 digital inputs, 8 digital outputs, and 8 relay controls. It provides a wide range of communication protocols, including Modbus RTU, Modbus TCP/IP, Profibus-DP, CANopen, EtherCAT, and EtherNet/IP. It features a 500 Kbps RS485 communication interface and uses a 24V DC power supply. The module also has LED indicators for easy diagnosis of system errors, and can be used in a variety of applications, such as machine control and monitoring, environmental monitoring, and remote control.