... provide isolation.8. ~ 220V power supply controller inputInput and output interface circuit:The controller of the "start", "stop", "A operation", " ... "type 2" as the input signal, theyhave the same input interface circuit. "Output 1", "output 2", "Output 3" as the ... output signal, they have the sameoutput interface circuit. Import and export of optoelectronic circuits are isolated, to ...