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Sonoff Basic R3 Switch Module (BASICR3)
Sonoff Basic R3

Available from:
Itead.cc
Aliexpress.com
Amazon.com
Domadoo.fr
Mediarath.de

Manufacturer:
Sonoff.tech

Install method:
Sonoff DIY

GPIO #Component
GPIO00 Button1
GPIO01 User
GPIO02 None
GPIO03 User
GPIO04 None
GPIO05 None
GPIO09 User
GPIO10 User
GPIO12 Relay1
GPIO13 Led1i
GPIO14 None
GPIO15 None
GPIO16 User
FLAG None
Configuration (old format, will be converted to new template when applied)
{"NAME":"Basic R3","GPIO":[17,255,0,255,0,0,255,255,21,56,0,0,255],"FLAG":0,"BASE":1}
Use code BLAKADDER when buying from itead.cc for a 10% discount.

The latest Sonoff Basic R3 can be flashed without the need to connect a serial interface with Sonoff DIY. Flashing instructions

Serial Flashing

Pinout

Image and more info from creationx.de

Dry Contact Modification