In the datasheet the reader can find info regarding output, setting, and the switching threshold. This datasheet presents information regarding response time, distance, and sensor.
There are lots of information such as sensors, threshold, and flight measurement are described inside the datasheet. The following are some excerpt from this datasheet:
S81 distance sensor line of fers the best solution for all the applications where cost reduction is requested, without compromising the detection or measurement performances. The class 2 Laser emission and the exclusive time of flight measurement of light technology assure extreme precision in the dist ance measurement, with range up to 4 meters. The high resolution is not a limit for the sensing speed, reaching 5 ms response time and 80 Hz switching frequency. Thanks to only two push-buttons for dif ferent distance threshold setting, the automatic sensor setting is very easy and accurate for the two independent NPN or PNP outputs.
Also, this datasheet gives you info such as distance sensors, and measurement.