diff --git a/README.md b/README.md
index c58fa87..828a49c 100644
--- a/README.md
+++ b/README.md
@@ -71,5 +71,7 @@ Code|Hex|Meaning
 4608|1200|Down button press and hold
 4864|1300|Down button release after long press
 
+For sockets the codes are the "up button" versions.
+
 ## Thanks
 Credit to Warren Ashcroft whose code I used as a base https://github.com/washcroft/LightwaveRF-LinkPlus
diff --git a/info.md b/info.md
index 669e53a..70e301e 100644
--- a/info.md
+++ b/info.md
@@ -36,4 +36,6 @@ Code|Hex|Meaning
 4355|1103|Down button triple press
 4356|1104|Down button quad press
 4608|1200|Down button press and hold
-4864|1300|Down button release after long press
\ No newline at end of file
+4864|1300|Down button release after long press
+
+For sockets the codes are the "up button" versions.
\ No newline at end of file