diff --git a/README.md b/README.md
index 1940ebf..97223f1 100644
--- a/README.md
+++ b/README.md
@@ -5,4 +5,13 @@ Redesigned: SQ9MDD<br>
 KISS TNC Over Seriall or Bluetooth: SQ5RWU<br><br>
 Hardware: TTGO T-beam v.1.0 / v.0.7
 
+<h3>User key functions:</h3>
+<br>
+1. short press:<br>
+ - if there is a FIX immediate sending of a frame with the position from the GPS<br>
+ - if there is no FIX, immediate sending of the frame with the position saved in the configuration<br>
+
+2. long press: on or off the GPS power supply<br>
+ - if the "FIXED_BEACON_EN" option is enabled in the configuration, a beacon will be sent every set time interval.<br>
+
 R.