Sonoff S26 R2 Plug (S26R2)
Sonoff S26 R2
GPIO #Component
GPIO00 Button1
GPIO01 User
GPIO02 User
GPIO03 User
GPIO04 None
GPIO05 None
GPIO09 None
GPIO10 None
GPIO12 Relay1
GPIO13 Led1i
GPIO14 None
GPIO15 None
GPIO16 None
Configuration (old format, will be converted to new template when applied)
{"NAME":"Sonoff S26R2","GPIO":[17,255,255,255,0,0,0,0,21,56,0,0,0],"FLAG":0,"BASE":8}
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This upgraded version is recognized by the “Max…” text printed on the front (Text differs depending on the type of plug).

Alternative template where the blue LED lights up only in case of connection issues and on button actions:

{"NAME":"Sonoff S26","GPIO":[17,255,255,255,0,0,0,0,21,158,0,0,0],"FLAG":0,"BASE":8}


S26R2TPF has a Espressif Systems 1MB ESP8285 on a small daughter board with no visible connection. Connections points for serial interface is on the backside of the main board labeled V for 3.3v, TX, RX and GND.

PCB Success with Tasmotizer 1.2, image 10.0.0 and a CP2102 serial programmer.