Ultrasonic detectors are devices that use high-frequency sound waves, typically above the range of human hearing, to detect objects or measure distances. They emit ultrasonic pulses and listen for the echoes that bounce back from nearby surfaces. This technology is commonly used in various applications, including automotive parking sensors, industrial automation, and robotics. These detectors can accurately identify the presence of objects, even in challenging environments. They are often preferred for their non-contact measurement capabilities, making them useful in situations where physical contact is not feasible. Ultrasonic detectors are valued for their reliability and versatility in both commercial and industrial settings.