What type of devices are specifically designed to detect physical features and relay information to control systems?

Sensors are devices that play a crucial role in monitoring and detecting physical features such as temperature, pressure, light, motion, and more. They work by converting these physical phenomena into signals that can be read by control systems, facilitating real-time data acquisition and feedback. By detecting changes in their environment, sensors provide critical information that enables automated systems to make informed decisions and adjustments.

In the context of Industry 4.0, sensors are essential for gathering data that drives the Internet of Things (IoT), allowing for better process monitoring, predictive maintenance, and enhanced decision-making. This capability to detect and relay accurate information forms the backbone of intelligent control systems that enhance operational efficiency.

The other options represent different types of devices that, while important in industrial systems, do not fulfill the specific function of detecting physical features. Actuators convert control signals into physical action but do not sense conditions. Transceivers facilitate communication but do not measure physical parameters. Controllers process data and execute control commands but rely on sensor inputs to function effectively.