diff --git a/app/src/main/java/com/example/medilightv2android/AppState.kt b/app/src/main/java/com/example/medilightv2android/AppState.kt
index 466d0ac..a01627a 100644
--- a/app/src/main/java/com/example/medilightv2android/AppState.kt
+++ b/app/src/main/java/com/example/medilightv2android/AppState.kt
@@ -231,6 +231,10 @@ class AppState(private val context: Context) {
         storage.catheterizationLevel = threshold
     }
 
+    fun savePiezoSettings() {
+        storage.piezoSettings = piezoSettings
+    }
+
     val estimatedVolume: Int
         get() {
             if (BladderLevel.MAX_LEVEL <= 0) return 0
diff --git a/app/src/main/java/com/example/medilightv2android/models/PiezoSettings.kt b/app/src/main/java/com/example/medilightv2android/models/PiezoSettings.kt
index ad15430..5a46da7 100644
--- a/app/src/main/java/com/example/medilightv2android/models/PiezoSettings.kt
+++ b/app/src/main/java/com/example/medilightv2android/models/PiezoSettings.kt
@@ -15,9 +15,9 @@ data class PiezoSettings(
     var posture: Posture = Posture.SITTING,
     var sensorPosition: SensorPosition = SensorPosition.LOWER_ABDOMEN,
     var maxVolume: Int = 500,
-    // BV calculation tweak — anterior-wall pull-in magnitude in millimetres.
-    // The stored value is always non-negative; BV calculation applies it as a
-    // negative (probe-ward) shift on the ant index. Default 0 keeps legacy
-    // behaviour.
+    // Charles 833c110: BV calculation tweak — anterior-wall pull-in magnitude in millimetres.
     var antOffsetMm: Int = 0,
+    // 우리 4ae25d9: Auto Scan 측정 사이클 목표 간격 (ms).
+    // BleManager.canSendMaa() time gate와 동일 값이 기본. 600ms 미만은 throttle이 막음.
+    var autoScanIntervalMs: Int = 600
 )
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 ea909e2..f12c290 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
@@ -59,6 +59,7 @@ import com.example.medilightv2android.ui.components.ScanLogDialog
 import com.example.medilightv2android.R
 import com.example.medilightv2android.ui.theme.*
 import androidx.compose.ui.res.stringResource
+import kotlin.math.roundToInt
 
 @Composable
 fun PiezoMonitoringView(appState: AppState) {
@@ -532,8 +533,8 @@ fun PiezoMonitoringView(appState: AppState) {
     }
 
     // Auto-measure: 측정 완료 대기 + 최소 간격 보장
-    // FW VBTFW0116 + MTU 247 + CONN_PRIORITY HIGH 조합에서 응답 ~330ms.
-    // BleManager throttle 600ms와 동기화해 사이클당 ~0.6~0.7s로 회전.
+    // 간격은 piezoSettings.autoScanIntervalMs (사용자 설정, 600~5000ms).
+    // BleManager throttle(600ms)이 하한이라 600 미만은 무의미.
     LaunchedEffect(isAutoMeasuring) {
         if (isAutoMeasuring) {
             while (isAutoMeasuring) {
@@ -545,7 +546,8 @@ fun PiezoMonitoringView(appState: AppState) {
                     }
                     autoTickCount++
                     val elapsed = System.currentTimeMillis() - measureStartMs
-                    val remaining = 600L - elapsed
+                    val targetIntervalMs = appState.piezoSettings.autoScanIntervalMs.toLong()
+                    val remaining = targetIntervalMs - elapsed
                     if (remaining > 0) kotlinx.coroutines.delay(remaining)
                 }
                 kotlinx.coroutines.delay(50)
@@ -1377,6 +1379,25 @@ fun PiezoMonitoringView(appState: AppState) {
                         colors = SliderDefaults.colors(thumbColor = MlPrimary, activeTrackColor = MlPrimary)
                     )
 
+                    HorizontalDivider(modifier = Modifier.padding(vertical = dividerPadding))
+
+                    // Auto Scan Interval — 측정 사이클 간격 (ms). 슬라이더 600~5000, 200 단위.
+                    Row(verticalAlignment = Alignment.CenterVertically) {
+                        Text("Auto Scan Interval", fontSize = labelSize, fontWeight = FontWeight.SemiBold)
+                        Spacer(modifier = Modifier.weight(1f))
+                        Text("${appState.piezoSettings.autoScanIntervalMs} ms", fontSize = labelSize, fontWeight = FontWeight.Bold, color = MlPrimary)
+                    }
+                    Slider(
+                        value = appState.piezoSettings.autoScanIntervalMs.toFloat(),
+                        onValueChange = {
+                            val snapped = ((it / 200f).roundToInt() * 200).coerceIn(600, 5000)
+                            appState.piezoSettings = appState.piezoSettings.copy(autoScanIntervalMs = snapped)
+                        },
+                        valueRange = 600f..5000f,
+                        steps = 21,
+                        colors = SliderDefaults.colors(thumbColor = MlPrimary, activeTrackColor = MlPrimary)
+                    )
+
                     // ── 개발자 전용 설정 ──
                     if (appState.isDevMode) {
                         HorizontalDivider(modifier = Modifier.padding(vertical = dividerPadding))
@@ -1583,7 +1604,7 @@ fun PiezoMonitoringView(appState: AppState) {
                         Spacer(modifier = Modifier.width(8.dp))
                         Button(
                             onClick = {
-                                appState.savePiezoSettingsNow()
+                                appState.savePiezoSettingsNow()  // Charles 함수명 통일
                                 showSettings = false
                             },
                             shape = RoundedCornerShape(10.dp),