The Watertech TT three-phase series IP 65 is a water-cooled frequency control system that allows three-phase electric pumps to start and stop in a controlled manner based on water drawdown at a constant pressure. One gets a constant pressure, independent of the decrease, this due to the frequency-controlled motor speed. This creates energy savings through less power drain! Another advantage is that water hammer is reduced and high starting current is avoided, as the pump starts and stops gradually. TT has protection against dry running in the event of a shortage of water on the suction side. TT is easy to set up, barely 3 parameters need to be entered.