You can also use a speed control to order dive or surface. The main advantage of it is that
the pumps will react much more sensitive compared to the use of a usual BTS. The following photos show an Auto End Pump by Engel.
Deiciding for the use of a speed contol and diods please make sure
that they are strong enough and correctly polarized. Please don't only rely on those photos as we won't pay for any
damage caused by misunderstandings or anything else. The water pressure switch is not shown here.
