Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -r06f7d5571359c1707fc32bb4e2f2e23f6ea32a2e -re97a8d6ce7e2ae6c3935854b78f604a6846047ad
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 06f7d5571359c1707fc32bb4e2f2e23f6ea32a2e)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision e97a8d6ce7e2ae6c3935854b78f604a6846047ad)
@@ -95,16 +95,21 @@
     BOOL isDGUsageInfoAvailable;                                             ///< Flag to indicate DG usage info is available.
 } DG_SERVICE_AND_USAGE_DATA_T;
 
-/// Tdi temperature up/down counters when the temperature varies above/below threshold value.
+/// Tdi High/Low temperature up/down counters when the temperature varies above/below threshold value.
 typedef struct
 {
-    U32 tdiTempUpCounter;                                                   ///< tdi temperature Up counter
-    U32 tdiTempDownCounter;                                                 ///< tdi temperature down counter
-    U32 prevTdiTempUpCounter;                                               ///< previous tdi temperature Up counter
-    U32 prevTdiTempDownCounter;                                             ///< previous tdi temperature down counter
-    BOOL clearAlarmStartTime;                                               ///< to clear temp high alarm, use persistent method
-    DG_RESERVOIR_ID_T dgPrevActiveReservoir;                                ///< Previous Active reservoir.
-    DG_RESERVOIR_ID_T dgCurrentActiveReservoir;                             ///< Current Active reservoir.
+    U32 tdiHighTempUpCounter;                                                   ///< tdi high temperature Up counter
+    U32 tdiHighTempDownCounter;                                                 ///< tdi high temperature down counter
+    U32 prevTdiHighTempUpCounter;                                               ///< previous tdi high temperature Up counter
+    U32 prevTdiHighTempDownCounter;                                             ///< previous tdi high temperature down counter
+    BOOL tdiHighclearAlarmStartTime;                                            ///< to clear temp high alarm, use persistent method
+    U32 tdiLowTempUpCounter;                                                    ///< tdi Low temperature Up counter
+    U32 tdiLowTempDownCounter;                                                  ///< tdi Low temperature down counter
+    U32 prevTdiLowTempUpCounter;                                                ///< previous tdi low temperature Up counter
+    U32 prevTdiLowTempDownCounter;                                              ///< previous tdi low temperature down counter
+    BOOL tdiLowclearAlarmStartTime;                                             ///< to clear temp low alarm, use persistent method
+    DG_RESERVOIR_ID_T dgPrevActiveReservoir;                                    ///< Previous Active reservoir.
+    DG_RESERVOIR_ID_T dgCurrentActiveReservoir;                                 ///< Current Active reservoir.
 } DG_TDI_TEMP_COUNTER_T;
 
 // ********** public function prototypes **********