the SL1500-NH brand new air heat pump controller sums up many years of experience and has a better performance in anti-interference. All ports of the complete controller have passed more stringent EMC tests: electric fast pulse 4kV; surge 4kV; Conduction anti-interference 150K80M.
the SL1500-NH controller includes the SL1500 internal board, SL108 wire controller and other components, which can meet the need for a brand new air heat pump unit that requires separation of internal and external control.