The datasheet presents discussion regarding ultrasonic distance, microcontroller, echo sensor, and controller. In the datasheet you can read information regarding interfacing, measurement, and ultrasonic wave.
Many explanation like error, distance, ultrasonic distance sensor, and distance sensor are explained inside the datasheet. These are chosen from the datasheet:
This “ECHO” Ultrasonic Distance Sensor from Rhydolabz is an amazing product that provides very short (2CM) to long-range (4M) detection and ranging. The sensor provides precise, stable noncontact distance measurements from 2cm to 4 meters with very high accuracy. Its compact size, higher range and easy usability make it a handy sensor for distance measurement and mapping. The board can easily be interfaced to microcontrollers where the triggering and measurement can be done using one I/O pin.
Furthermore, the datasheet explains more regarding range, echo, and sensor.