Index: dialin/hd/ui_proxy.py
===================================================================
diff -u -r3168721bb8dc03f810032b638d2642e90db6d153 -rffca09f0cf9fc24662f5209c7f3c65dedf74b650
--- dialin/hd/ui_proxy.py	(.../ui_proxy.py)	(revision 3168721bb8dc03f810032b638d2642e90db6d153)
+++ dialin/hd/ui_proxy.py	(.../ui_proxy.py)	(revision ffca09f0cf9fc24662f5209c7f3c65dedf74b650)
@@ -1890,4 +1890,40 @@
             return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
         else:
             self.logger.debug("Timeout!!!!")
+            return False
+
+    def cmd_ui_send_alarm_triggered_message(self, alarm_id: int, data_field1: int = 0, data_field2: int = 0) -> int:
+        """
+        Constructs and sends an alarm triggered message to the HD. Used for UI POST failures.
+        Data fields are restricted to unsigned integer type. Defaulted to 0.
+
+        @param alarm_id: (int) the alarm id from the ui to trigger
+        @param data_field1: (int) data value for data field 1
+        @param data_field2: (int) data value for data field 2
+        @return: 1 if successful, zero otherwise
+        """
+
+        field_type_uint = 1
+
+        alarm = integer_to_bytearray(alarm_id)
+        data_type1 = integer_to_bytearray(field_type_uint)
+        dat1 = integer_to_bytearray(data_field1)
+        data_type2 = integer_to_bytearray(field_type_uint)
+        dat2 = integer_to_bytearray(data_field2)
+
+        payload = alarm + data_type1 + dat1 + data_type2 + dat2
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.ui_to_hd_ch_id,
+                                              message_id=MsgIds.MSG_ID_ALARM_TRIGGERED.value,
+                                              payload=payload)
+
+        self.logger.debug("Sending UI alarm triggered message")
+
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
             return False
\ No newline at end of file