diff --git a/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChartActionBar.tsx b/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChartActionBar.tsx
index b1810f3..6227c9f 100644
--- a/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChartActionBar.tsx
+++ b/components/main/kabelueberwachung/kue705FO/Charts/TDRChart/TDRChartActionBar.tsx
@@ -31,31 +31,44 @@ const TDRChartActionBar: React.FC = () => {
     if (!data) return;
 
     dispatch(setTDRChartDataById({ id, data }));
-    dispatch(setSelectedTDRId(id)); // 👉 wichtig!
+    dispatch(setSelectedTDRId(id));
+  };
+
+  const handleReset = () => {
+    setSelectedId(null);
+    dispatch(setSelectedTDRId(null));
   };
 
   return (
-    <div className="flex flex-wrap justify-end items-center p-2 bg-gray-100 rounded-lg space-x-2">
-      {idsForSlot.length > 0 && (
-        <>
-          <label htmlFor="tdrIdSelect" className="text-sm font-semibold">
-            Messung ID
-          </label>
-          <select
-            id="tdrIdSelect"
-            value={selectedId ?? ""}
-            onChange={handleSelectChange}
-            className="border rounded px-2 py-1 text-sm"
-          >
-            <option value="">-- Wähle Messung --</option>
-            {idsForSlot.map((entry) => (
-              <option key={entry.id} value={entry.id}>
-                ID {entry.id} – {entry.t}
-              </option>
-            ))}
-          </select>
-        </>
-      )}
+    <div className="flex justify-between items-center p-2 bg-gray-100 rounded-lg space-x-4">
+      {/* 🔵 Linke Seite: Reset-Button */}
+      <button
+        className="border border-gray-300 bg-white rounded px-3 py-1 text-sm hover:bg-gray-200"
+        onClick={handleReset}
+      >
+        Letzte Messung
+      </button>
+
+      {/* 🔵 Rechte Seite: Dropdown */}
+      <div className="flex items-center space-x-2">
+        <label htmlFor="tdrIdSelect" className="text-sm font-semibold">
+          Messung ID
+        </label>
+        <select
+          id="tdrIdSelect"
+          value={selectedId ?? ""}
+          onChange={handleSelectChange}
+          className="border rounded px-2 py-1 text-sm"
+          disabled={idsForSlot.length === 0}
+        >
+          <option value="">-- Wähle Messung --</option>
+          {idsForSlot.map((entry) => (
+            <option key={entry.id} value={entry.id}>
+              ID {entry.id} – {entry.t}
+            </option>
+          ))}
+        </select>
+      </div>
     </div>
   );
 };
diff --git a/config/webVersion.ts b/config/webVersion.ts
index 765f722..9dbcdd6 100644
--- a/config/webVersion.ts
+++ b/config/webVersion.ts
@@ -6,5 +6,5 @@
 2: Patch oder Hotfix (Bugfixes oder kleine Änderungen).
 
 */
-const webVersion = "1.6.153";
+const webVersion = "1.6.154";
 export default webVersion;