The 1794-OB16 is a digital output module manufactured by Rockwell Automation as part of their Allen-Bradley 1794 Flex I/O series. The module is designed to provide digital output control in industrial control systems and programmable logic controllers (PLCs).

Here are some key features of the 1794-OB16 digital output module:

- It supports 16 digital output channels.

- Each output channel can be individually configured as either a sinking (NPN) or sourcing (PNP) output.

- The module utilizes a removable terminal block for easy wiring and installation.

- It is compatible with various communication networks, such as EtherNet/IP, ControlNet, and DeviceNet, allowing for flexible connectivity options.

- Diagnostic indicators on the module provide status and fault information for each output channel.

The 1794-OB16 digital output module is commonly used in automation applications where control signals need to be sent to external devices, such as solenoids, motor starters, or indicator lights.