diff --git a/Sonoff-4CH-and-4CH-Pro.md b/Sonoff-4CH-and-4CH-Pro.md
index 9e6bd3b9..c2826301 100644
--- a/Sonoff-4CH-and-4CH-Pro.md
+++ b/Sonoff-4CH-and-4CH-Pro.md
@@ -43,6 +43,12 @@ Use the ESP programming header as described in the picture to upload the firmwar
 
 <img title="Sonoff 4CH Pro programming" src="https://github.com/arendst/arendst.github.io/blob/master/media/4chpro_gpio0.JPG" width="100%" align="middle" />
 
+### Sonoff 4CH Pro R2
+
+On the R2 module the GPIO0 pin is broken out to [a small pad to the right of the ESP package](https://github.com/arendst/Sonoff-Tasmota/issues/2021#issuecomment-371227748):
+
+<img title="R2 module - GPIO0 pad" src="https://user-images.githubusercontent.com/3594528/37109801-58fb97a4-223b-11e8-969c-1131dcfa6ee1.jpg" width="50%" align="middle" />
+
 ## Solving Sonoff 4CHpro programing issues
 If you have problems to program the 4CH-pro, you might find below tips useful:
 * Basic) Use the ESP program header and ensure that the right port is set in the Arduino IDE.