diff --git a/.env.development b/.env.development
index 6f85d47..73b247a 100644
--- a/.env.development
+++ b/.env.development
@@ -6,6 +6,6 @@ NEXT_PUBLIC_USE_MOCK_BACKEND_LOOP_START=false
 NEXT_PUBLIC_EXPORT_STATIC=false
 NEXT_PUBLIC_USE_CGI=false
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.6.557
+NEXT_PUBLIC_APP_VERSION=1.6.558
 NEXT_PUBLIC_CPL_MODE=json   # json (Entwicklungsumgebung) oder jsSimulatedProd (CPL ->CGI-Interface-Simulator) oder production (CPL-> CGI-Interface Platzhalter)
 
diff --git a/.env.production b/.env.production
index b34af9a..95dfbbb 100644
--- a/.env.production
+++ b/.env.production
@@ -5,5 +5,5 @@ NEXT_PUBLIC_CPL_API_PATH=/CPL
 NEXT_PUBLIC_EXPORT_STATIC=true
 NEXT_PUBLIC_USE_CGI=true
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.6.557
+NEXT_PUBLIC_APP_VERSION=1.6.558
 NEXT_PUBLIC_CPL_MODE=production
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13bc669..71ae1b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [1.6.558] – 2025-07-08
+
+- feat: ersetzt Einheit-Select durch Listbox mit littwin-blue Design in AnalogInputsSettingsModal
+
+---
 ## [1.6.557] – 2025-07-08
 
 - refactor: Zeitraum-Dropdown in DetailModal auf Listbox mit Littwin-Design umgestellt
diff --git a/components/main/system/DetailModal.tsx b/components/main/system/DetailModal.tsx
index 4a9cdb7..f291ee2 100644
--- a/components/main/system/DetailModal.tsx
+++ b/components/main/system/DetailModal.tsx
@@ -61,7 +61,7 @@ export const DetailModal = ({
     },
     plugins: {
       legend: { position: "bottom" as const },
-      title: { display: true, text: `Verlauf – ${selectedKey}` },
+      title: { display: true, text: `Verlauf  ${selectedKey}` },
     },
   };
 
@@ -74,8 +74,9 @@ export const DetailModal = ({
           <h2 className="text-xl font-semibold">
             Detailansicht: {selectedKey}
           </h2>
-          <button onClick={onClose} className="text-red-500 hover:text-red-700">
-            ✕
+
+          <button onClick={onClose} className="text-2xl hover:text-gray-200">
+            <i className="bi bi-x-circle-fill"></i>
           </button>
         </div>
 
@@ -142,8 +143,10 @@ export const DetailModal = ({
                 {
                   label: selectedKey,
                   data: values,
-                  borderColor: "rgba(59,130,246,1)",
-                  backgroundColor: "rgba(59,130,246,0.2)",
+                  // littwin-blue
+                  // rgb(61, 176, 242),
+                  borderColor: "rgba(61, 176, 242, 1)",
+
                   fill: false,
                 },
               ],
diff --git a/package-lock.json b/package-lock.json
index 25a7b28..36491c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.557",
+  "version": "1.6.558",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cpl-v4",
-      "version": "1.6.557",
+      "version": "1.6.558",
       "dependencies": {
         "@fontsource/roboto": "^5.1.0",
         "@headlessui/react": "^2.2.4",
diff --git a/package.json b/package.json
index b87db32..ee753e4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.557",
+  "version": "1.6.558",
   "private": true,
   "scripts": {
     "dev": "next dev",