Index: firmware/App/Monitors/Buttons.h
===================================================================
diff -u -r395522dffef1348e176564925656012f529c1910 -r9fcd1ad071bcce7a592833367c103e235e49654f
--- firmware/App/Monitors/Buttons.h	(.../Buttons.h)	(revision 395522dffef1348e176564925656012f529c1910)
+++ firmware/App/Monitors/Buttons.h	(.../Buttons.h)	(revision 9fcd1ad071bcce7a592833367c103e235e49654f)
@@ -37,6 +37,15 @@
     BUTTON_STATE_PRESSED,                       ///< Button is in the pressed state
     NUM_OF_BUTTON_STATES                        ///< Number of button states
 } BUTTON_STATE_T;
+
+/// Enumeration of off button responses from UI.
+typedef enum OffButtonRspsFromUI
+{
+    OFF_BUTTON_RSP_USER_REQUESTS_POWER_OFF = 0,                     ///< User requests power off response
+    OFF_BUTTON_RSP_USER_CONFIRMS_POWER_OFF,                         ///< User confirms power off response
+    OFF_BUTTON_RSP_USER_REJECTS_POWER_OFF,                          ///< User rejects power off response
+    NUM_OF_OFF_BUTTON_RSPS                                          ///< Number of off button responses from UI
+} OFF_BUTTON_RSP_T;
 
 #pragma pack(push,1)
 /// Payload record structure for an off button confirmation message from the UI.