1pcs micro USB 5V 4-channel relay module USB control relay module serial port *s

1pcs micro USB 5V 4-channel relay module USB control relay module serial port #t

1Pcs Micro Usb Usb Control Relay Module 5V 4-Channel New Ic tc *ty

HID Drive-free Micro USB 4 Channel 5V Relay Delay Module 10A/250VAC 10A/30VDC *r

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HID Drive-free Micro USB 4 Channel 5V Relay Delay Module 10A/250VAC 10A/30VDC #t