1786-RPTD ,It stands for "Repeated Digital DC Output" module and is used for providing digital output signals in a ControlLogix chassis.

The 1786-RPTD module offers 16 digital output channels. Each channel can be individually configured to provide either sinking or sourcing output. It supports 24V DC output signals and has a maximum output current rating of 2A per channel.

This module is commonly used in industrial automation applications where multiple digital output signals are required, such as controlling solenoid valves, motor starters, and indicator lights. It can be easily integrated into the ControlLogix platform, allowing seamless communication with other devices in the system.