diff --git a/examples/BASIC_v4/BASIC_v4.ino b/examples/BASIC_v4/BASIC_v4.ino
index c816ab4..a967c6b 100644
--- a/examples/BASIC_v4/BASIC_v4.ino
+++ b/examples/BASIC_v4/BASIC_v4.ino
@@ -51,7 +51,7 @@ CC BY-SA 4.0 Attribution-ShareAlike 4.0 International License
 #define SENSOR_CO2_UPDATE_INTERVAL 5000      /** ms */
 #define SENSOR_PM_UPDATE_INTERVAL 5000       /** ms */
 #define SENSOR_TEMP_HUM_UPDATE_INTERVAL 5000 /** ms */
-#define DISPLAY_DELAY_SHOW_CONTENT_MS 3000   /** ms */
+#define DISPLAY_DELAY_SHOW_CONTENT_MS 6000   /** ms */
 #define WIFI_HOTSPOT_PASSWORD_DEFAULT                                          \
   "cleanair" /** default WiFi AP password                                      \
               */
@@ -160,9 +160,9 @@ public:
       }
     }
 
-    /** Get "pmsStandard" */
-    if (JSON.typeof_(root["pmsStandard"]) == "string") {
-      String standard = root["pmsStandard"];
+    /** Get "pmStandard" */
+    if (JSON.typeof_(root["pmStandard"]) == "string") {
+      String standard = root["pmStandard"];
       if (standard == "ugm3") {
         inUSAQI = false;
       } else {
diff --git a/examples/ONE_I-9PSL/ONE_I-9PSL.ino b/examples/ONE_I-9PSL/ONE_I-9PSL.ino
index 1431182..9023103 100644
--- a/examples/ONE_I-9PSL/ONE_I-9PSL.ino
+++ b/examples/ONE_I-9PSL/ONE_I-9PSL.ino
@@ -94,7 +94,7 @@ enum {
 #define SENSOR_CO2_UPDATE_INTERVAL 5000      /** ms */
 #define SENSOR_PM_UPDATE_INTERVAL 5000       /** ms */
 #define SENSOR_TEMP_HUM_UPDATE_INTERVAL 5000 /** ms */
-#define DISPLAY_DELAY_SHOW_CONTENT_MS 3000   /** ms */
+#define DISPLAY_DELAY_SHOW_CONTENT_MS 6000   /** ms */
 #define WIFI_HOTSPOT_PASSWORD_DEFAULT                                          \
   "cleanair" /** default WiFi AP password                                      \
               */
@@ -194,7 +194,9 @@ public:
 
     /** Get "country" */
     if (JSON.typeof_(root["country"]) == "string") {
-      String country = root["country"];
+      String _country = root["country"];
+      country = _country;
+
       if (country == "US") {
         inF = true;
       } else {
@@ -202,9 +204,9 @@ public:
       }
     }
 
-    /** Get "pmsStandard" */
-    if (JSON.typeof_(root["pmsStandard"]) == "string") {
-      String standard = root["pmsStandard"];
+    /** Get "pmStandard" */
+    if (JSON.typeof_(root["pmStandard"]) == "string") {
+      String standard = root["pmStandard"];
       if (standard == "ugm3") {
         inUSAQI = false;
       } else {
@@ -406,6 +408,13 @@ public:
    */
   UseLedBar getLedBarMode(void) { return ledBarMode; }
 
+  /**
+   * @brief Get the Country
+   *
+   * @return String
+   */
+  String getCountry(void) { return country; }
+
 private:
   bool inF;                 /** Temperature unit, true: F, false: C */
   bool inUSAQI;             /** PMS unit, true: USAQI, false: ugm3 */
@@ -417,6 +426,7 @@ private:
   UseLedBar ledBarMode = UseLedBarCO2; /** */
   char models[20];                     /** */
   char mqttBroker[256];                /** */
+  String country;                      /***/
 };
 AgServer agServer;
 
@@ -597,6 +607,19 @@ static void ledTest() {
   ag.ledBar.show();
   delay(1000);
 }
+static void ledTest2Min(void) {
+  uint32_t tstart = millis();
+
+  Serial.println("Start run LED test for 2 min");
+  while (1) {
+    ledTest();
+    uint32_t ms = (uint32_t)(millis() - tstart);
+    if (ms >= (60 * 1000 * 2)) {
+      Serial.println("LED test after 2 min finish");
+      break;
+    }
+  }
+}
 
 static void co2Poll(void) {
   co2Ppm = ag.s8.getCo2();
@@ -814,6 +837,8 @@ static void connectToWifi() {
     dispSmState = APP_SM_WIFI_MANAGER_STA_CONNECTING;
     ledSmState = APP_SM_WIFI_MANAGER_STA_CONNECTING;
   });
+
+  displayShowText("Connecting to", "config WiFi", "...");
   wifiManager.autoConnect(wifiSSID.c_str(), WIFI_HOTSPOT_PASSWORD_DEFAULT);
   xTaskCreate(
       [](void *obj) {
@@ -986,6 +1011,25 @@ static void boardInit(void) {
   if (ag.pms5003.begin(Serial0) == false) {
     failedHandler("Init PMS5003 failed");
   }
+
+  /** Run LED test on start up */
+  displayShowText("Press now for", "LED test", "");
+  bool test = false;
+  uint32_t stime = millis();
+  while (1) {
+    if (ag.button.getState() == ag.button.BUTTON_PRESSED) {
+      test = true;
+      break;
+    }
+    delay(1);
+    uint32_t ms = (uint32_t)(millis() - stime);
+    if (ms >= 3000) {
+      break;
+    }
+  }
+  if (test) {
+    ledTest();
+  }
 }
 
 /**
@@ -1014,7 +1058,11 @@ static void serverConfigPoll(void) {
       }
     }
     if (agServer.isLedBarTestRequested()) {
-      ledTest();
+      if (agServer.getCountry() == "TH") {
+        ledTest2Min();
+      } else {
+        ledTest();
+      }
     }
   }
 }
diff --git a/examples/Open_Air_O-1PP/Open_Air_O-1PP.ino b/examples/Open_Air_O-1PP/Open_Air_O-1PP.ino
index f726db3..4529758 100644
--- a/examples/Open_Air_O-1PP/Open_Air_O-1PP.ino
+++ b/examples/Open_Air_O-1PP/Open_Air_O-1PP.ino
@@ -89,7 +89,7 @@ enum {
 #define SENSOR_CO2_UPDATE_INTERVAL 5000      /** ms */
 #define SENSOR_PM_UPDATE_INTERVAL 5000       /** ms */
 #define SENSOR_TEMP_HUM_UPDATE_INTERVAL 5000 /** ms */
-#define DISPLAY_DELAY_SHOW_CONTENT_MS 3000   /** ms */
+#define DISPLAY_DELAY_SHOW_CONTENT_MS 6000   /** ms */
 #define WIFI_HOTSPOT_PASSWORD_DEFAULT                                          \
   "cleanair" /** default WiFi AP password                                      \
               */
@@ -197,9 +197,9 @@ public:
       }
     }
 
-    /** Get "pmsStandard" */
-    if (JSON.typeof_(root["pmsStandard"]) == "string") {
-      String standard = root["pmsStandard"];
+    /** Get "pmStandard" */
+    if (JSON.typeof_(root["pmStandard"]) == "string") {
+      String standard = root["pmStandard"];
       if (standard == "ugm3") {
         inUSAQI = false;
       } else {
diff --git a/examples/Open_Air_O-1PPT/Open_Air_O-1PPT.ino b/examples/Open_Air_O-1PPT/Open_Air_O-1PPT.ino
index e95198b..231a5a1 100644
--- a/examples/Open_Air_O-1PPT/Open_Air_O-1PPT.ino
+++ b/examples/Open_Air_O-1PPT/Open_Air_O-1PPT.ino
@@ -89,7 +89,7 @@ enum {
 #define SENSOR_CO2_UPDATE_INTERVAL 5000      /** ms */
 #define SENSOR_PM_UPDATE_INTERVAL 5000       /** ms */
 #define SENSOR_TEMP_HUM_UPDATE_INTERVAL 5000 /** ms */
-#define DISPLAY_DELAY_SHOW_CONTENT_MS 3000   /** ms */
+#define DISPLAY_DELAY_SHOW_CONTENT_MS 6000   /** ms */
 #define WIFI_HOTSPOT_PASSWORD_DEFAULT                                          \
   "cleanair" /** default WiFi AP password                                      \
               */
@@ -197,9 +197,9 @@ public:
       }
     }
 
-    /** Get "pmsStandard" */
-    if (JSON.typeof_(root["pmsStandard"]) == "string") {
-      String standard = root["pmsStandard"];
+    /** Get "pmStandard" */
+    if (JSON.typeof_(root["pmStandard"]) == "string") {
+      String standard = root["pmStandard"];
       if (standard == "ugm3") {
         inUSAQI = false;
       } else {
diff --git a/examples/Open_Air_O-1PST/Open_Air_O-1PST.ino b/examples/Open_Air_O-1PST/Open_Air_O-1PST.ino
index 8a8eed2..3e47cd2 100644
--- a/examples/Open_Air_O-1PST/Open_Air_O-1PST.ino
+++ b/examples/Open_Air_O-1PST/Open_Air_O-1PST.ino
@@ -93,7 +93,7 @@ enum {
 #define SENSOR_CO2_UPDATE_INTERVAL 5000      /** ms */
 #define SENSOR_PM_UPDATE_INTERVAL 5000       /** ms */
 #define SENSOR_TEMP_HUM_UPDATE_INTERVAL 5000 /** ms */
-#define DISPLAY_DELAY_SHOW_CONTENT_MS 3000   /** ms */
+#define DISPLAY_DELAY_SHOW_CONTENT_MS 6000   /** ms */
 #define WIFI_HOTSPOT_PASSWORD_DEFAULT                                          \
   "cleanair" /** default WiFi AP password                                      \
               */
@@ -201,9 +201,9 @@ public:
       }
     }
 
-    /** Get "pmsStandard" */
-    if (JSON.typeof_(root["pmsStandard"]) == "string") {
-      String standard = root["pmsStandard"];
+    /** Get "pmStandard" */
+    if (JSON.typeof_(root["pmStandard"]) == "string") {
+      String standard = root["pmStandard"];
       if (standard == "ugm3") {
         inUSAQI = false;
       } else {
diff --git a/src/AirGradient.cpp b/src/AirGradient.cpp
index 81743eb..600ce24 100644
--- a/src/AirGradient.cpp
+++ b/src/AirGradient.cpp
@@ -1,6 +1,6 @@
 #include "AirGradient.h"
 
-#define AG_LIB_VER "3.0.0"
+#define AG_LIB_VER "3.0.1"
 
 AirGradient::AirGradient(BoardType type)
     : pms5003(type), pms5003t_1(type), pms5003t_2(type), s8(type), sht4x(type),