This is the intermittent duty version of the booster pump. It can boost inlet pressure up to 60 PSI. Designed to boost low pressure situations below 40 PSI. This pump is not designed for continuous duty, but rather for shorter run times of a few hours. It has a thermal protective microprocessor that allows the pump to shut down for periods to protect it from overheating. It comes with a heat sink, 1/2 in quick connect fittings and ?a 115 V plug. Designed to be used with the Merlin?Garden Pro or any other system with 1/2 in inlet and 3/8 in outlet.