What is a limitation of IR control systems?

The correct answer identifies a significant characteristic of infrared (IR) control systems: they require direct line of sight to function effectively. This limitation arises because IR signals are transmitted via infrared light, which does not penetrate solid objects. As a result, any obstruction between the IR transmitter and receiver can prevent the control signals from reaching their intended destination. This constraint can be problematic in environments where the equipment is not in a direct line with the user's remote control or other IR sending device.

Other aspects that differentiate IR systems include their feedback capabilities, operational distance, and susceptibility to light interference, which are not limitations. Generally, while IR systems can provide feedback, operate over short distances, and can be disrupted by strong light sources, their need for a clear path for signal transmission remains one of their most notable limitations. Understanding this characteristic is crucial for designing and deploying AV systems that incorporate IR controls, ensuring that they align with the physical layout and obstacle considerations within a space.