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I Can't understand sonoff 4ch pro r2 for dc motor

Hi, I am a beginner and I wanna control my open/close dc24v motors of greenhouses.


I found the diagram for dc wiring diagram


https://cdn.itead.cc/media/wysiwyg/Products/Sonoff_4CH_Pro_DC_motor.jpg


here, blue line comes from R1, R2...right?


so..which means...Should I turn on button both R1 and R2 on ewelink in order to swich on the 1 motor??  please reply me. Thanks and happy new year


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