What is a main feature of the IR Learner Pro?

The IR Learner Pro's main feature is its ability to capture infrared codes. This device is specifically designed to learn and store remote control signals from IR remote controls, making it invaluable in environments where devices need to be controlled via infrared communication. By capturing these codes, the IR Learner Pro allows integrators to program control systems to replicate the behavior of existing remotes, facilitating seamless integration of various audiovisual equipment into a centralized control system. This capability is crucial for ensuring compatibility and ease of use in complex AV setups, enabling remote management of devices that rely on IR signals for operation.

The other options mention functions that are not inherent to the IR Learner Pro. For instance, the capability to reboot devices, test network connections, or display control messages falls outside the primary function of capturing infrared signals.