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Sinilink DC5V Module Relay Board (XY-WF5V)
Sinilink DC5V Module

Available from:
Aliexpress.com
Banggood.com
Amazon.com





Install method:
USB to Serial

GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 Relay1
GPIO05 User
GPIO09 None
GPIO10 None
GPIO12 Button1
GPIO13 Led1
GPIO14 None
GPIO15 None
GPIO16 User
FLAG None
Configuration (old format, will be converted to new template when applied)
{"NAME":"Sinilink XY-WF5V","GPIO":[0,0,0,0,21,255,0,0,17,52,0,0,255],"FLAG":0,"BASE":18}

It is possible to use solid core 24 AWG wires to make the connection without needing to solder them to the Sinilink board, but they may need soldering to a connector for the USB to serial adapter. Alternatively, you can strip some Ethernet Cat5e cable, which has the perfect diameter to fit in this board without soldering.

pinout