... start/soft stop function,constant pressure control Intelligent constant pressure controller for 3pumpsPower range:200V Class: 0.5HP-10HP400V Class: 0. ... rest, to extend the life of pumps and electrical accessories. (6) unattended, when the call after power, water pumps start ... the average of 30% of the secondary power supply -60%.(10) double-pump can be linked, no auxiliary pump, auxiliary pump ...