diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index d5771d0..c77b488 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -14,8 +14,8 @@ android {
         applicationId = "com.example.medilightv2android"
         minSdk = 24
         targetSdk = 36
-        versionCode = 25
-        versionName = "1.1.0-design"
+        versionCode = 27
+        versionName = "1.1.1-design"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
diff --git a/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PiezoMonitoringView.kt b/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PiezoMonitoringView.kt
index 510387f..7175323 100644
--- a/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PiezoMonitoringView.kt
+++ b/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PiezoMonitoringView.kt
@@ -1582,7 +1582,26 @@ fun PiezoMonitoringView(appState: AppState) {
 
                     HorizontalDivider(modifier = Modifier.padding(vertical = dividerPadding))
 
-                    // Disconnect
+                    // Disconnect (소프트) — bond 유지, 다른 known 기기로 빠른 스위치
+                    Button(
+                        onClick = {
+                            showSettings = false
+                            bleManager.disconnect()
+                            appState.isDeviceConnected = false
+                            appState.goHome()
+                        },
+                        modifier = Modifier.fillMaxWidth().height(40.dp),
+                        shape = RoundedCornerShape(10.dp),
+                        colors = ButtonDefaults.buttonColors(containerColor = MlSecondaryText.copy(alpha = 0.15f))
+                    ) {
+                        Icon(Icons.Default.LinkOff, null, tint = Color(0xFF333333), modifier = Modifier.size(16.dp))
+                        Spacer(modifier = Modifier.width(6.dp))
+                        Text("Disconnect", fontSize = 13.sp, fontWeight = FontWeight.SemiBold, color = Color(0xFF333333))
+                    }
+
+                    Spacer(modifier = Modifier.height(6.dp))
+
+                    // Delete Pairing — 완전 해제 (bond 삭제 + known list 에서 제거)
                     var showDisconnectConfirm by remember { mutableStateOf(false) }
                     Button(
                         onClick = { showDisconnectConfirm = true },