The pressure switch incorporates a further function:
if the over pressure of approx. 0.12 bar inside the hull (which by compressing the air within the hull when flooding the tank) decreases because of leakage, the pressure switch will terminate the "submerging mode" allow only the " emerge command". this feature ensures that no water can enter the pressure proof compartment of the model's hull. As long as the leakage remainsthe model can not be submerged
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