Require Microprocessor based simple or GSM based multi pump controller(i.e, suitable for two pump/three pump/four pump) including following features:*cascading operation of pump respect to pressure switch/transmitter input* overload protection*undercurrent protection*over voltage/under voltage protection*Locked rotor protection*Single phasing protection in case of three phase power supply* power supply 380-450V, three phase, 50Hz. AC & power supply 170-250V, single phase, 50Hz. AC