can it be submerged and determine the depth of water, much like how fishfinder works..?
Probably not. These are waterproof to allow outdoor usage in cars or other equipment that needs to be washed from time to time.
That you have made a number of related posts and this kind intrigues me, if you had read that the ultrasonic transceiver worked for your application based on a DIY ROV forum why do you ask here? It would seem that the ROV forum would have a higher IQ for your ROV application then this forum.Most of us have been in similar circumstances that you find yourself in and realize we are just going to have purchase the hardware required and try it out on our application and see if it works. R think you are at that point right now.
up up up