B&R 2003 DO721 Digital Output Module Datasheet and User Manual

This document is a technical datasheet and user manual for the B&R 2003 DO721 digital output module, which provides 4 isolated digital outputs (relay or changeover) with 240 VAC / 24 VDC nominal voltage and 4 A per output. It includes specifications for switching power, protection characteristics, electrical isolation, mechanical dimensions, status LEDs, connection diagrams, and variable declarations for use with CAN and remote I/O bus controllers.