diff --git a/sketch/obd2_gauge/config.h b/sketch/obd2_gauge/config.h
index c2fb7ee..b649408 100644
--- a/sketch/obd2_gauge/config.h
+++ b/sketch/obd2_gauge/config.h
@@ -33,13 +33,14 @@ void clickSound() {
   casioBeep(4096, 25);
 }
 
-// Configuration menu list (3 options)
-const String menuList[3] = {
-  "Ajuste de Alarmas", // 0
-  "Volumen de Bip",    // 1
-  "Salir"              // 2
+// Configuration menu list (4 options)
+const String menuList[4] = {
+  "Activación de Alarmas", // 0
+  "Sonido de Alarma",      // 1
+  "Volumen de Bip",        // 2
+  "Salir"                  // 3
 };
-const uint8_t maxMenu = 3;
+const uint8_t maxMenu = 4;
 
 // Menu list for warning setting (4 vehicle gauges)
 const String parameterList[4][2] = {
@@ -56,7 +57,7 @@ void warningMenu() {
   tft.fillScreen(TFT_BLACK);
   tft.fillRectVGradient(0, 0, 320, 26, TFT_ORANGE, 0xfc00);
   tft.setTextColor(TFT_BLACK);
-  tft.drawCentreString("[---  Ajuste de Alarmas  ---]", 159, 0, 4);
+  tft.drawCentreString("[--- Activación de Alarmas ---]", 159, 0, 4);
 
   auto drawAllRows = [&]() {
     for (uint8_t i = 0; i < 4; i++) {
@@ -119,7 +120,167 @@ void warningMenu() {
 }
 
 // -------------------------------------------------------------
-// Sub-screen 1: Volumen de Bip (Ajuste Tactil Directo)
+// Sub-screen 1: Sonido de Alarma (Tipo de Sonido y Volumen)
+// -------------------------------------------------------------
+const char* const ALARM_NAME_TABLE[4] = {
+  "Casio Doble",
+  "Sincronizado",
+  "Bitonal Auto",
+  "Triple Urgente"
+};
+
+void playAlarmSample(uint8_t type, uint8_t vol) {
+  if (vol == 0) return;
+  uint16_t duty = VOL_DUTY_TABLE[vol > 5 ? 3 : vol];
+
+  if (type == 0) { // Casio Doble
+    ledcSetup(buzzerChannel, 4096, 10);
+    ledcWrite(buzzerChannel, duty);
+    delay(25);
+    ledcWrite(buzzerChannel, 0);
+    delay(35);
+    ledcSetup(buzzerChannel, 4096, 10);
+    ledcWrite(buzzerChannel, duty);
+    delay(25);
+    ledcWrite(buzzerChannel, 0);
+  } else if (type == 1) { // Sincronizado
+    ledcSetup(buzzerChannel, 4096, 10);
+    ledcWrite(buzzerChannel, duty);
+    delay(30);
+    ledcWrite(buzzerChannel, 0);
+    delay(100);
+    ledcSetup(buzzerChannel, 4096, 10);
+    ledcWrite(buzzerChannel, duty);
+    delay(30);
+    ledcWrite(buzzerChannel, 0);
+  } else if (type == 2) { // Bitonal Auto
+    ledcSetup(buzzerChannel, 4096, 10);
+    ledcWrite(buzzerChannel, duty);
+    delay(40);
+    ledcWrite(buzzerChannel, 0);
+    delay(20);
+    ledcSetup(buzzerChannel, 3072, 10);
+    ledcWrite(buzzerChannel, duty);
+    delay(40);
+    ledcWrite(buzzerChannel, 0);
+  } else if (type == 3) { // Triple Urgente
+    for (uint8_t k = 0; k < 3; k++) {
+      ledcSetup(buzzerChannel, 4096, 10);
+      ledcWrite(buzzerChannel, duty);
+      delay(20);
+      ledcWrite(buzzerChannel, 0);
+      if (k < 2) delay(25);
+    }
+  }
+}
+
+void alarmSoundMenu() {
+  tft.fillScreen(TFT_BLACK);
+  tft.fillRectVGradient(0, 0, 320, 26, TFT_ORANGE, 0xfc00);
+  tft.setTextColor(TFT_BLACK);
+  tft.drawCentreString("[---   Sonido de Alarma   ---]", 159, 0, 4);
+
+  auto drawAlarmUI = []() {
+    tft.fillRect(0, 28, 320, 160, TFT_BLACK);
+
+    // 4 Pattern Tiles (2x2 grid)
+    for (uint8_t i = 0; i < 4; i++) {
+      int16_t x = (i % 2 == 0) ? 10 : 166;
+      int16_t y = (i < 2) ? 34 : 74;
+      int16_t w = 144;
+      int16_t h = 34;
+      bool isSel = (i == alarmSoundType);
+
+      uint16_t bg = isSel ? TFT_BLUE : 0x18E3;
+      tft.fillRoundRect(x, y, w, h, 5, bg);
+      if (isSel) {
+        tft.drawRoundRect(x, y, w, h, 5, TFT_CYAN);
+        tft.drawRoundRect(x + 1, y + 1, w - 2, h - 2, 4, TFT_WHITE);
+      }
+      tft.setTextColor(isSel ? TFT_WHITE : 0xBDD7, bg);
+      tft.drawCentreString(ALARM_NAME_TABLE[i], x + w / 2, y + 8, 2);
+    }
+
+    // Volume level label
+    tft.setTextColor(TFT_WHITE, TFT_BLACK);
+    String lvlStr = "Volumen: Nivel " + String(alarmVolumeLevel) + " de 5 (" + VOL_NAME_TABLE[alarmVolumeLevel] + ")";
+    tft.drawCentreString(lvlStr.c_str(), 160, 116, 2);
+
+    // 6 Direct Touch Tiles (0 to 5) for Alarm Volume
+    for (uint8_t i = 0; i <= 5; i++) {
+      int16_t bx = 7 + i * 52;
+      int16_t by = 136;
+      int16_t bw = 46;
+      int16_t bh = 46;
+      bool isSel = (i == alarmVolumeLevel);
+
+      uint16_t bgCol = isSel ? (i == 0 ? 0x8000 : (i >= 4 ? TFT_ORANGE : (i >= 2 ? TFT_GREEN : 0x03E0))) : 0x18E3;
+      tft.fillRoundRect(bx, by, bw, bh, 5, bgCol);
+      if (isSel) {
+        tft.drawRoundRect(bx, by, bw, bh, 5, TFT_WHITE);
+        tft.drawRoundRect(bx + 1, by + 1, bw - 2, bh - 2, 4, TFT_WHITE);
+      }
+      tft.setTextColor(isSel ? TFT_WHITE : 0xAD55, bgCol);
+      tft.drawCentreString(String(i).c_str(), bx + bw / 2, by + 6, 6);
+    }
+  };
+
+  drawAlarmUI();
+
+  // Bottom action button: [ GUARDAR Y SALIR ]
+  tft.fillRoundRect(25, 192, 270, 40, 5, 0x02EC); // Rich Ocean Blue
+  tft.setTextColor(TFT_WHITE);
+  tft.drawCentreString("GUARDAR Y SALIR", 160, 200, 4);
+  delay(200);
+
+  while (true) {
+    autoDim();
+    uint16_t tx = 0, ty = 0;
+    if (getTouch(&tx, &ty)) {
+      // 1. Touch on pattern selection (y: 32 to 112)
+      if (ty >= 32 && ty <= 112) {
+        int8_t col = (tx < 160) ? 0 : 1;
+        int8_t row = (ty < 72) ? 0 : 1;
+        uint8_t selType = row * 2 + col;
+        if (selType < 4) {
+          alarmSoundType = selType;
+          drawAlarmUI();
+          playAlarmSample(alarmSoundType, alarmVolumeLevel);
+        }
+        while (isScreenPressed()) { delay(10); yield(); }
+        delay(50);
+      }
+      // 2. Touch on alarm volume tiles (y: 130 to 186)
+      else if (ty >= 130 && ty <= 186) {
+        int8_t touchedLvl = (tx - 7) / 52;
+        if (touchedLvl >= 0 && touchedLvl <= 5) {
+          alarmVolumeLevel = touchedLvl;
+          drawAlarmUI();
+          playAlarmSample(alarmSoundType, alarmVolumeLevel);
+        }
+        while (isScreenPressed()) { delay(10); yield(); }
+        delay(50);
+      }
+      // 3. Bottom button [ GUARDAR Y SALIR ] or top bar
+      else if ((ty >= 188 && ty <= 238 && tx >= 20 && tx <= 300) || ty < 30) {
+        casioBeep(4096, 25);
+        pref.begin("setting", false);
+        pref.putUChar("alm_vol", alarmVolumeLevel);
+        pref.putUChar("alm_type", alarmSoundType);
+        pref.end();
+        while (isScreenPressed()) { delay(10); yield(); }
+        break;
+      }
+    } else if (digitalRead(SELECTOR_PIN) == LOW) {
+      delay(200);
+      break;
+    }
+    yield();
+  }
+}
+
+// -------------------------------------------------------------
+// Sub-screen 2: Volumen de Bip (Ajuste Tactil Directo)
 // -------------------------------------------------------------
 void volumeMenu() {
   tft.fillScreen(TFT_BLACK);
@@ -205,7 +366,6 @@ void volumeMenu() {
   }
 }
 
-// -------------------------------------------------------------
 // -------------------------------------------------------------
 // Menu Principal
 // -------------------------------------------------------------
@@ -213,17 +373,17 @@ void listMenu(uint8_t choice) {
   tft.fillRect(0, 28, 320, 212, TFT_BLACK);
 
   for (uint8_t i = 0; i < maxMenu; i++) {
-    int y = 46 + i * 64;
+    int y = 34 + i * 50;
     if (choice == i) {
-      tft.fillRoundRect(10, y, 300, 48, 6, TFT_BLUE);
-      tft.drawRoundRect(10, y, 300, 48, 6, TFT_CYAN);
-      tft.drawRoundRect(11, y + 1, 298, 46, 5, TFT_CYAN);
+      tft.fillRoundRect(10, y, 300, 42, 5, TFT_BLUE);
+      tft.drawRoundRect(10, y, 300, 42, 5, TFT_CYAN);
+      tft.drawRoundRect(11, y + 1, 298, 40, 4, TFT_CYAN);
       tft.setTextColor(TFT_WHITE, TFT_BLUE);
     } else {
-      tft.fillRoundRect(10, y, 300, 48, 6, 0x18E3); // subtle dark card
+      tft.fillRoundRect(10, y, 300, 42, 5, 0x18E3); // subtle dark card
       tft.setTextColor(TFT_WHITE, 0x18E3);
     }
-    tft.drawString(menuList[i], 25, y + 12, 4);
+    tft.drawString(menuList[i], 22, y + 9, 4);
   }
 }
 
@@ -246,9 +406,10 @@ void configMenu() {
 
     if (getTouch(&tx, &ty)) {
       int8_t touchedOpt = -1;
-      if (ty >= 36 && ty < 102) touchedOpt = 0;
-      else if (ty >= 102 && ty < 166) touchedOpt = 1;
-      else if (ty >= 166 && ty <= 235) touchedOpt = 2;
+      if (ty >= 28 && ty < 80) touchedOpt = 0;
+      else if (ty >= 80 && ty < 130) touchedOpt = 1;
+      else if (ty >= 130 && ty < 180) touchedOpt = 2;
+      else if (ty >= 180 && ty <= 235) touchedOpt = 3;
 
       if (touchedOpt >= 0) {
         select = touchedOpt;
@@ -285,7 +446,7 @@ void configMenu() {
     if (executeSelect >= 0) {
       select = executeSelect;
 
-      // Option 0: Warning setting (Thresholds & ON/OFF)
+      // Option 0: Activacion de Alarmas (ON/OFF)
       if (select == 0) {
         warningMenu();
         tft.fillScreen(TFT_BLACK);
@@ -294,8 +455,17 @@ void configMenu() {
         tft.drawCentreString("[---   Configuration Menu   ---]", 159, 0, 4);
         listMenu(select);
       }
-      // Option 1: Volume setting (Buzzer level & live touch)
+      // Option 1: Sonido de Alarma (Tipo de Sonido y Volumen)
       else if (select == 1) {
+        alarmSoundMenu();
+        tft.fillScreen(TFT_BLACK);
+        tft.fillRectVGradient(0, 0, 320, 26, TFT_ORANGE, 0xfc00);
+        tft.setTextColor(TFT_BLACK);
+        tft.drawCentreString("[---   Configuration Menu   ---]", 159, 0, 4);
+        listMenu(select);
+      }
+      // Option 2: Volumen de Bip (Toques de pantalla)
+      else if (select == 2) {
         volumeMenu();
         tft.fillScreen(TFT_BLACK);
         tft.fillRectVGradient(0, 0, 320, 26, TFT_ORANGE, 0xfc00);
@@ -303,8 +473,8 @@ void configMenu() {
         tft.drawCentreString("[---   Configuration Menu   ---]", 159, 0, 4);
         listMenu(select);
       }
-      // Option 2: Exit
-      else if (select == 2) {
+      // Option 3: Exit
+      else if (select == 3) {
         break;
       }
 
diff --git a/sketch/obd2_gauge/meter.h b/sketch/obd2_gauge/meter.h
index 9379c7e..5ee599d 100644
--- a/sketch/obd2_gauge/meter.h
+++ b/sketch/obd2_gauge/meter.h
@@ -1365,13 +1365,13 @@ void updateMeter(uint8_t pidNo, String response) { // update parameter on screen
 }
 /*-------------------------------*/
 
-// Non-blocking alarm sound generator: classic Casio double-chirp [bip-bip] every 1 second
+// Non-blocking alarm sound generator: 4 selectable patterns
 uint32_t lastAlarmSoundCycle = 0;
 uint8_t alarmSoundStep = 0;
 uint32_t alarmSoundStepTime = 0;
 
-void handleAlarmSound(bool anyAlarmActive) {
-  if (!anyAlarmActive || buzzerVolumeLevel == 0) {
+void handleAlarmSound(bool anyAlarmActive, bool flashTick = false) {
+  if (!anyAlarmActive || alarmVolumeLevel == 0) {
     if (alarmSoundStep != 0) {
       ledcWrite(buzzerChannel, 0);
       alarmSoundStep = 0;
@@ -1380,35 +1380,119 @@ void handleAlarmSound(bool anyAlarmActive) {
   }
 
   uint32_t now = millis();
-  uint16_t duty = VOL_DUTY_TABLE[buzzerVolumeLevel > 5 ? 3 : buzzerVolumeLevel];
+  uint16_t duty = VOL_DUTY_TABLE[alarmVolumeLevel > 5 ? 3 : alarmVolumeLevel];
 
-  // Pattern: [25ms chirp] -> 35ms pause -> [25ms chirp] -> pause until 1000ms
-  if (alarmSoundStep == 0) {
-    if (now - lastAlarmSoundCycle >= 1000) {
-      lastAlarmSoundCycle = now;
+  if (alarmSoundType == 0) {
+    // Patrón 0: Casio Doble cada 1000ms
+    if (alarmSoundStep == 0) {
+      if (now - lastAlarmSoundCycle >= 1000) {
+        lastAlarmSoundCycle = now;
+        alarmSoundStep = 1;
+        alarmSoundStepTime = now;
+        ledcSetup(buzzerChannel, 4096, 10);
+        ledcWrite(buzzerChannel, duty);
+      }
+    } else if (alarmSoundStep == 1) { // 25ms chirp
+      if (now - alarmSoundStepTime >= 25) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 2;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 2) { // 35ms pausa
+      if (now - alarmSoundStepTime >= 35) {
+        ledcSetup(buzzerChannel, 4096, 10);
+        ledcWrite(buzzerChannel, duty);
+        alarmSoundStep = 3;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 3) { // 25ms chirp
+      if (now - alarmSoundStepTime >= 25) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 0;
+      }
+    }
+  } else if (alarmSoundType == 1) {
+    // Patrón 1: Sincronizado con el parpadeo del vúmetro
+    if (flashTick && arcFlashVisible) {
+      ledcSetup(buzzerChannel, 4096, 10);
+      ledcWrite(buzzerChannel, duty);
       alarmSoundStep = 1;
       alarmSoundStepTime = now;
-      ledcSetup(buzzerChannel, 4096, 10);
-      ledcWrite(buzzerChannel, duty);
-    }
-  } else if (alarmSoundStep == 1) { // 25ms first chirp
-    if (now - alarmSoundStepTime >= 25) {
-      ledcWrite(buzzerChannel, 0);
-      alarmSoundStep = 2;
-      alarmSoundStepTime = now;
-    }
-  } else if (alarmSoundStep == 2) { // 35ms gap
-    if (now - alarmSoundStepTime >= 35) {
-      ledcSetup(buzzerChannel, 4096, 10);
-      ledcWrite(buzzerChannel, duty);
-      alarmSoundStep = 3;
-      alarmSoundStepTime = now;
-    }
-  } else if (alarmSoundStep == 3) { // 25ms second chirp
-    if (now - alarmSoundStepTime >= 25) {
+    } else if (alarmSoundStep == 1 && (now - alarmSoundStepTime >= 30)) {
       ledcWrite(buzzerChannel, 0);
       alarmSoundStep = 0;
     }
+  } else if (alarmSoundType == 2) {
+    // Patrón 2: Bitonal Automotriz cada 1000ms (4096 Hz -> 3072 Hz)
+    if (alarmSoundStep == 0) {
+      if (now - lastAlarmSoundCycle >= 1000) {
+        lastAlarmSoundCycle = now;
+        alarmSoundStep = 1;
+        alarmSoundStepTime = now;
+        ledcSetup(buzzerChannel, 4096, 10);
+        ledcWrite(buzzerChannel, duty);
+      }
+    } else if (alarmSoundStep == 1) { // 40ms tono alto
+      if (now - alarmSoundStepTime >= 40) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 2;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 2) { // 20ms silencio
+      if (now - alarmSoundStepTime >= 20) {
+        ledcSetup(buzzerChannel, 3072, 10);
+        ledcWrite(buzzerChannel, duty);
+        alarmSoundStep = 3;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 3) { // 40ms tono medio
+      if (now - alarmSoundStepTime >= 40) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 0;
+      }
+    }
+  } else if (alarmSoundType == 3) {
+    // Patrón 3: Triple Urgente cada 1200ms
+    if (alarmSoundStep == 0) {
+      if (now - lastAlarmSoundCycle >= 1200) {
+        lastAlarmSoundCycle = now;
+        alarmSoundStep = 1;
+        alarmSoundStepTime = now;
+        ledcSetup(buzzerChannel, 4096, 10);
+        ledcWrite(buzzerChannel, duty);
+      }
+    } else if (alarmSoundStep == 1) { // 20ms pulso 1
+      if (now - alarmSoundStepTime >= 20) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 2;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 2) { // 25ms pausa
+      if (now - alarmSoundStepTime >= 25) {
+        ledcSetup(buzzerChannel, 4096, 10);
+        ledcWrite(buzzerChannel, duty);
+        alarmSoundStep = 3;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 3) { // 20ms pulso 2
+      if (now - alarmSoundStepTime >= 20) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 4;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 4) { // 25ms pausa
+      if (now - alarmSoundStepTime >= 25) {
+        ledcSetup(buzzerChannel, 4096, 10);
+        ledcWrite(buzzerChannel, duty);
+        alarmSoundStep = 5;
+        alarmSoundStepTime = now;
+      }
+    } else if (alarmSoundStep == 5) { // 20ms pulso 3
+      if (now - alarmSoundStepTime >= 20) {
+        ledcWrite(buzzerChannel, 0);
+        alarmSoundStep = 0;
+      }
+    }
   }
 }
 
@@ -1595,7 +1679,7 @@ void handleArcAlarmFlash() {
       }
     }
   }
-  handleAlarmSound(anyInRedAlarm);
+  handleAlarmSound(anyInRedAlarm, toggleTick);
 }
 
 // Target and current brightness variables for smooth fade
diff --git a/sketch/obd2_gauge/obd2_gauge.ino b/sketch/obd2_gauge/obd2_gauge.ino
index 8c4add2..c89a9a5 100644
--- a/sketch/obd2_gauge/obd2_gauge.ino
+++ b/sketch/obd2_gauge/obd2_gauge.ino
@@ -97,6 +97,8 @@ bool alarmEnabled[4] = { true, true, true, true };
 const uint16_t VOL_DUTY_TABLE[6] = { 0, 2, 8, 25, 80, 250 };
 const char* const VOL_NAME_TABLE[6] = { "SILENCIO", "ULTRA BAJO", "MUY BAJO", "BAJO (CASIO)", "MEDIO", "ALTO" };
 uint8_t buzzerVolumeLevel = 3; // Default 3: Bajo (Casio suave)
+uint8_t alarmVolumeLevel = 3;  // Default 3: Bajo/Casio (Volumen independiente de alarma)
+uint8_t alarmSoundType = 0;    // Default 0: Casio Doble (0: Casio Doble, 1: Sincronizado, 2: Bitonal, 3: Triple Urgente)
 
 /*
 0 - Refrigerante
@@ -286,8 +288,12 @@ recent_client_addr : {0x00,0x00,0x00,0x00,0x00,0x00} array of bytes[6]
     String almKey = "alm_" + String(i);
     alarmEnabled[i] = pref.getBool(almKey.c_str(), true);
   }
-  buzzerVolumeLevel = pref.getUChar("b_vol", 2);
-  if (buzzerVolumeLevel > 5) buzzerVolumeLevel = 2;
+  buzzerVolumeLevel = pref.getUChar("b_vol", 3);
+  if (buzzerVolumeLevel > 5) buzzerVolumeLevel = 3;
+  alarmVolumeLevel = pref.getUChar("alm_vol", 3);
+  if (alarmVolumeLevel > 5) alarmVolumeLevel = 3;
+  alarmSoundType = pref.getUChar("alm_type", 0);
+  if (alarmSoundType > 3) alarmSoundType = 0;
   pref.getBytes("recent_client", recent_client_addr, pref.getBytesLength("recent_client"));  //read last bt address