The 1756-OW16I module is a digital output module manufactured by Rockwell Automation under the Allen Bradley brand. It is designed specifically for use with the ControlLogix platform. The module provides 16 digital output channels, each capable of switching either 24V DC or 120/240V AC voltage signals. It is commonly used in industrial control and automation applications to control external devices, such as solenoid valves, motors, or lights, based on digital signals received from the PLC (Programmable Logic Controller).