Index: firmware/App/Services/AlarmMgmt.h
===================================================================
diff -u -r8466e63f95f65a3ffb18c3af85ac99328e41167b -r8bd1ae47aa13a843aa8abd6321ddc050deacb4a6
--- firmware/App/Services/AlarmMgmt.h	(.../AlarmMgmt.h)	(revision 8466e63f95f65a3ffb18c3af85ac99328e41167b)
+++ firmware/App/Services/AlarmMgmt.h	(.../AlarmMgmt.h)	(revision 8bd1ae47aa13a843aa8abd6321ddc050deacb4a6)
@@ -1,17 +1,17 @@
 /**************************************************************************
 *
-* Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2019-2021 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
-* @file AlarmMgmt.h
+* @file    AlarmMgmt.h
 *
-* @author (last) Sean Nash
-* @date (last) 14-Oct-2020
+* @author  (last)      Sean Nash
+* @date    (last)      13-Aug-2021
 *
-* @author (original) Sean Nash
-* @date (original) 07-Nov-2019
+* @author  (original)  Sean Nash
+* @date    (original)  07-Nov-2019
 *
 ***************************************************************************/
 
@@ -121,13 +121,21 @@
 /// Payload record structure for the alarm info message.
 typedef struct
 {
-    U32 audioVolume;                                    ///< Audio volume level (1..5)
-    F32 audioCurrHG;                                    ///< Primary alarm audio current - high gain (mA)
-    F32 audioCurrLG;                                    ///< Primary alarm audio current - low gain (mA)
-    F32 backupAudioCurr;                                ///< Backup alarm audio current (mA)
-    BOOL safetyShutdown;                                ///< Safety shutdown activated? (T/F)
+    U32 audioVolume;                ///< Audio volume level (1..5)
+    F32 audioCurrHG;                ///< Primary alarm audio current - high gain (mA)
+    F32 audioCurrLG;                ///< Primary alarm audio current - low gain (mA)
+    F32 backupAudioCurr;            ///< Backup alarm audio current (mA)
+    BOOL safetyShutdown;            ///< Safety shutdown activated? (T/F)
 } ALARM_INFO_PAYLOAD_T;
 
+/// Payload record structure for the alarm triggered message.
+typedef struct
+{
+    U32 alarm;                      ///< ID of alarm that was triggered
+    ALARM_DATA_T almData1;          ///< Supporting data #1
+    ALARM_DATA_T almData2;          ///< Supporting data #2
+} ALARM_TRIGGERED_PAYLOAD_T;
+
 #pragma pack(pop)
 
 #pragma pack(push, 2)