diff --git a/App.tsx b/App.tsx
index c32ab55..b8575b4 100644
--- a/App.tsx
+++ b/App.tsx
@@ -17,6 +17,15 @@ const App: React.FC = () => {
   const [errorMsg, setErrorMsg] = useState<string | null>(null);
 
   // Polling Logic
+  useEffect(() => {
+    try {
+      // @ts-ignore
+      (window.adsbygoogle = window.adsbygoogle || []).push({});
+    } catch (e) {
+      console.error("AdSense error", e);
+    }
+  }, []);
+
   useEffect(() => {
     let isMounted = true;
     let timeoutId: number;
@@ -32,9 +41,9 @@ const App: React.FC = () => {
         if (isMounted) setBasicInfo(parsedBasic);
 
         // Delay 500ms
-        await new Promise(r => setTimeout(r, 500)); 
+        await new Promise(r => setTimeout(r, 500));
         if (!isMounted) return;
-        
+
         // 2. Get Cell Info
         const cellData = await serialService.sendCommand(CMD_CELL_INFO);
         const parsedCells = JBDProtocol.parseCellInfo(cellData);
@@ -103,7 +112,7 @@ const App: React.FC = () => {
     try {
       const newCharge = type === 'charge' ? !currentState : basicInfo.mosfetStatus.charge;
       const newDischarge = type === 'discharge' ? !currentState : basicInfo.mosfetStatus.discharge;
-      
+
       await serialService.toggleMosfet(newCharge, newDischarge);
     } catch (e: any) {
       alert("MOSFET 제어 실패: " + e.message);
@@ -123,7 +132,7 @@ const App: React.FC = () => {
 
   return (
     <div className="flex h-screen w-full bg-gray-950 text-gray-100 overflow-hidden">
-      
+
       {/* Sidebar */}
       <div className="w-20 lg:w-64 flex-shrink-0 bg-gray-900 border-r border-gray-800 flex flex-col z-20">
         <div className="p-6 flex items-center justify-center lg:justify-start">
@@ -136,32 +145,46 @@ const App: React.FC = () => {
         <nav className="flex-1 px-4 space-y-2 mt-4">
           <button
             onClick={() => setActiveTab('dashboard')}
-            className={`w-full flex items-center p-3 rounded-xl transition-all ${
-              activeTab === 'dashboard' 
-                ? 'bg-blue-600 text-white shadow-lg shadow-blue-900/20' 
-                : 'text-gray-400 hover:bg-gray-800 hover:text-gray-200'
-            }`}
+            className={`w-full flex items-center p-3 rounded-xl transition-all ${activeTab === 'dashboard'
+              ? 'bg-blue-600 text-white shadow-lg shadow-blue-900/20'
+              : 'text-gray-400 hover:bg-gray-800 hover:text-gray-200'
+              }`}
           >
             <LayoutDashboard size={20} />
             <span className="ml-3 hidden lg:block font-medium">대시보드</span>
           </button>
           <button
             onClick={() => setActiveTab('settings')}
-            className={`w-full flex items-center p-3 rounded-xl transition-all ${
-              activeTab === 'settings' 
-                ? 'bg-blue-600 text-white shadow-lg shadow-blue-900/20' 
-                : 'text-gray-400 hover:bg-gray-800 hover:text-gray-200'
-            }`}
+            className={`w-full flex items-center p-3 rounded-xl transition-all ${activeTab === 'settings'
+              ? 'bg-blue-600 text-white shadow-lg shadow-blue-900/20'
+              : 'text-gray-400 hover:bg-gray-800 hover:text-gray-200'
+              }`}
           >
             <SettingsIcon size={20} />
             <span className="ml-3 hidden lg:block font-medium">설정 (EEPROM)</span>
           </button>
         </nav>
 
+        {/* AdSense Unit */}
+        <div className="px-4 pb-2">
+          <div className="text-[10px] text-gray-600 text-center mb-1">Sponsored</div>
+          <ins className="adsbygoogle"
+            style={{ display: "block" }}
+            data-ad-client="ca-pub-4444852135420953"
+            data-ad-slot="7799405796"
+            data-ad-format="auto"
+            data-full-width-responsive="true"></ins>
+          <script>
+            (adsbygoogle = window.adsbygoogle || []).push({ });
+          </script>
+
+
+        </div>
+
         <div className="p-4 border-t border-gray-800">
           <div className="flex flex-col gap-2">
             {connectionState === ConnectionState.CONNECTED ? (
-              <button 
+              <button
                 onClick={handleDisconnect}
                 className="w-full py-3 px-4 bg-red-900/30 text-red-400 border border-red-900/50 rounded-xl hover:bg-red-900/50 transition-colors flex items-center justify-center font-semibold"
               >
@@ -169,12 +192,12 @@ const App: React.FC = () => {
                 <span className="hidden lg:inline">연결 해제</span>
               </button>
             ) : (
-               <button 
+              <button
                 onClick={handleConnect}
                 disabled={connectionState === ConnectionState.CONNECTING}
                 className="w-full py-3 px-4 bg-green-600 text-white rounded-xl hover:bg-green-500 transition-colors flex items-center justify-center font-semibold shadow-lg shadow-green-900/20"
               >
-                {connectionState === ConnectionState.CONNECTING ? <RefreshCw className="animate-spin" size={18}/> : <Usb size={18} className="mr-2" />}
+                {connectionState === ConnectionState.CONNECTING ? <RefreshCw className="animate-spin" size={18} /> : <Usb size={18} className="mr-2" />}
                 <span className="hidden lg:inline">BMS 연결</span>
               </button>
             )}
@@ -190,58 +213,58 @@ const App: React.FC = () => {
             {activeTab === 'dashboard' ? '개요 (Overview)' : '설정 (Configuration)'}
           </h1>
           <div className="flex items-center gap-4">
-             {connectionState === ConnectionState.CONNECTED && (
-                <div className="flex items-center text-xs font-mono text-green-400 bg-green-900/20 px-3 py-1 rounded-full border border-green-900/50">
-                   <div className="w-2 h-2 rounded-full bg-green-500 mr-2 animate-pulse"></div>
-                   CONNECTED
-                </div>
-             )}
-             {connectionState === ConnectionState.DISCONNECTED && (
-                <div className="flex items-center text-xs font-mono text-gray-500 bg-gray-800 px-3 py-1 rounded-full">
-                   <div className="w-2 h-2 rounded-full bg-gray-500 mr-2"></div>
-                   OFFLINE
-                </div>
-             )}
+            {connectionState === ConnectionState.CONNECTED && (
+              <div className="flex items-center text-xs font-mono text-green-400 bg-green-900/20 px-3 py-1 rounded-full border border-green-900/50">
+                <div className="w-2 h-2 rounded-full bg-green-500 mr-2 animate-pulse"></div>
+                CONNECTED
+              </div>
+            )}
+            {connectionState === ConnectionState.DISCONNECTED && (
+              <div className="flex items-center text-xs font-mono text-gray-500 bg-gray-800 px-3 py-1 rounded-full">
+                <div className="w-2 h-2 rounded-full bg-gray-500 mr-2"></div>
+                OFFLINE
+              </div>
+            )}
           </div>
         </header>
 
         {/* Content Body with Right Sidebar */}
         <div className="flex-1 flex overflow-hidden">
-            {/* Main View */}
-            <main className="flex-1 overflow-hidden bg-gray-950 relative">
-              {errorMsg && (
-                <div className="bg-red-900/80 text-white px-6 py-2 flex items-center justify-center text-sm font-medium backdrop-blur absolute top-0 left-0 right-0 z-30 animate-in slide-in-from-top-2">
-                  <AlertCircle size={16} className="mr-2" />
-                  {errorMsg}
-                </div>
-              )}
+          {/* Main View */}
+          <main className="flex-1 overflow-hidden bg-gray-950 relative">
+            {errorMsg && (
+              <div className="bg-red-900/80 text-white px-6 py-2 flex items-center justify-center text-sm font-medium backdrop-blur absolute top-0 left-0 right-0 z-30 animate-in slide-in-from-top-2">
+                <AlertCircle size={16} className="mr-2" />
+                {errorMsg}
+              </div>
+            )}
 
-              {renderContent()}
-              
-              {/* Empty State Overlay */}
-              {connectionState !== ConnectionState.CONNECTED && (
-                <div className="absolute inset-0 bg-gray-950/80 backdrop-blur-sm z-10 flex flex-col items-center justify-center p-6 text-center">
-                    <div className="w-16 h-16 bg-gray-800 rounded-2xl flex items-center justify-center mb-6 shadow-xl border border-gray-700">
-                      <Usb size={32} className="text-gray-500"/>
-                    </div>
-                    <h2 className="text-2xl font-bold text-white mb-2">장치가 연결되지 않았습니다</h2>
-                    <p className="text-gray-400 max-w-md mb-8">
-                      JBD BMS를 UART-to-USB 어댑터로 연결하여 실시간 상태를 확인하고 설정을 변경하세요.
-                    </p>
-                    <button 
-                      onClick={handleConnect}
-                      className="py-3 px-8 bg-blue-600 hover:bg-blue-500 text-white font-semibold rounded-xl transition-all shadow-lg shadow-blue-900/30 flex items-center"
-                    >
-                      <Usb size={18} className="mr-2"/> 장치 연결하기
-                    </button>
-                </div>
-              )}
-            </main>
+            {renderContent()}
 
-            {/* Right Terminal Panel */}
-            <aside className="w-80 lg:w-96 border-l border-gray-800 bg-gray-950 flex flex-col flex-shrink-0 z-20">
-              <Terminal />
-            </aside>
+            {/* Empty State Overlay */}
+            {connectionState !== ConnectionState.CONNECTED && (
+              <div className="absolute inset-0 bg-gray-950/80 backdrop-blur-sm z-10 flex flex-col items-center justify-center p-6 text-center">
+                <div className="w-16 h-16 bg-gray-800 rounded-2xl flex items-center justify-center mb-6 shadow-xl border border-gray-700">
+                  <Usb size={32} className="text-gray-500" />
+                </div>
+                <h2 className="text-2xl font-bold text-white mb-2">장치가 연결되지 않았습니다</h2>
+                <p className="text-gray-400 max-w-md mb-8">
+                  JBD BMS를 UART-to-USB 어댑터로 연결하여 실시간 상태를 확인하고 설정을 변경하세요.
+                </p>
+                <button
+                  onClick={handleConnect}
+                  className="py-3 px-8 bg-blue-600 hover:bg-blue-500 text-white font-semibold rounded-xl transition-all shadow-lg shadow-blue-900/30 flex items-center"
+                >
+                  <Usb size={18} className="mr-2" /> 장치 연결하기
+                </button>
+              </div>
+            )}
+          </main>
+
+          {/* Right Terminal Panel */}
+          <aside className="w-80 lg:w-96 border-l border-gray-800 bg-gray-950 flex flex-col flex-shrink-0 z-20">
+            <Terminal />
+          </aside>
         </div>
       </div>
     </div>