diff --git a/luxtronik/parameters.py b/luxtronik/parameters.py
index 28e3971..41ab4c7 100755
--- a/luxtronik/parameters.py
+++ b/luxtronik/parameters.py
@@ -179,9 +179,9 @@ def __init__(self, safe=True):
             138: Unknown("ID_Einst_TV2VDSWB_akt"),
             139: Unknown("ID_Einst_MinSwan_Time_akt"),
             140: Unknown("ID_Einst_SuMk2_akt"),
-            141: Unknown("ID_Einst_HzMK2E_akt"),
-            142: Unknown("ID_Einst_HzMK2ANH_akt"),
-            143: Unknown("ID_Einst_HzMK2ABS_akt"),
+            141: Celsius("ID_Einst_HzMK2E_akt", True),
+            142: Celsius("ID_Einst_HzMK2ANH_akt", True),
+            143: Celsius("ID_Einst_HzMK2ABS_akt", True),
             144: Unknown("ID_Einst_HzMK2Hgr_akt"),
             145: Unknown("ID_Einst_HzFtMK2Vl_akt"),
             146: Unknown("ID_Temp_THG_BwHD_saved"),