What is the difference?
Well, I want to find the distance to an object and not a binary yes/no regarding the presence of an object. So that unit needs to be modified significantly for either triangulation or phase shift calculations, in order to determine the distance. If you have an idea for realizing this with that unit, I would be glad to hear it.
Also the range is less than my requirement, but that can probably be increased by using a more powerful laser and an APD for detection.