This article explains how to remotely control the 03-Series IDS displays

The IDS ET3203L/ET4303L/ET5053 Displays can be remotely controlled using the below methods.

Controlling the IDS Display remotely
The IDS Display allows remote access from a host application. This is done using either the VESA Display Data Channel Command Interface (DDC/CI) or the Multiple Display Control command sets. Users can communicate with the monitor through either of these protocols. The host application can send a variety of different commands which will be executed on the IDS Display. For detailed information regarding the command set, refer to the attached application note or our Knowledge Article available HERE
(Note: The .pdf and KB article has not yet been updated to show compatibility with the 03-Series IDS displays, however, these are compatible)

CEC Functionality (Consumer Electronic Control)
The IDS Display is equipped with CEC capability. If a host device (with CEC built in) is connected to the monitor through HDMI, the monitor can be turned on by only turning the host device on.