This Ultrasonic Range Sensor is 4 pin, non-contact distance measurement module with cable included. This module uses sound waves to detect objects and measure distances without physical contact.

It works by emitting ultrasonic pulses and measuring the time it takes for the sound to reflect off an object and return to the sensor. This "time-of-flight" data is used to calculate the distance to the object, making ultrasonic sensors useful in a variety of applications, including robotics, industrial automation, and more.