diff --git a/examples/ONE_I-9PSL/ONE_I-9PSL.ino b/examples/ONE_I-9PSL/ONE_I-9PSL.ino
index 62931f5..0f0ead5 100644
--- a/examples/ONE_I-9PSL/ONE_I-9PSL.ino
+++ b/examples/ONE_I-9PSL/ONE_I-9PSL.ino
@@ -846,10 +846,10 @@ static void setRGBledColor(char color) {
   }
 
   /** Sensor LED indicator has only show status on last 2 LED on LED Bar */
-  int ledNum = ag.ledBar.getNumberOfLed() - 1;
+  int ledNum = ag.ledBar.getNumberOfLeds() - 1;
   ag.ledBar.setColor(r, g, b, ledNum);
 
-  ledNum = ag.ledBar.getNumberOfLed() - 2;
+  ledNum = ag.ledBar.getNumberOfLeds() - 2;
   ag.ledBar.setColor(r, g, b, ledNum);
 }
 
@@ -969,7 +969,7 @@ static void singleLedAnimation(uint8_t r, uint8_t g, uint8_t b) {
     ag.ledBar.setColor(r, g, b, ledCount);
   } else {
     ledCount++;
-    if (ledCount >= ag.ledBar.getNumberOfLed()) {
+    if (ledCount >= ag.ledBar.getNumberOfLeds()) {
       ledCount = 0;
     }
     ag.ledBar.setColor(r, g, b, ledCount);
@@ -993,7 +993,7 @@ static void ledSmHandler(int sm) {
     /** In WiFi Manager Mode */
     /** Turn LED OFF */
     /** Turn midle LED Color */
-    ag.ledBar.setColor(0, 0, 255, ag.ledBar.getNumberOfLed() / 2);
+    ag.ledBar.setColor(0, 0, 255, ag.ledBar.getNumberOfLeds() / 2);
     break;
   }
   case APP_SM_WIFI_MAMAGER_PORTAL_ACTIVE: {
@@ -1166,8 +1166,8 @@ static void sensorLedColorHandler(void) {
     setRGBledPMcolor(pm25);
     break;
   default:
-    ag.ledBar.setColor(0, 0, 0, ag.ledBar.getNumberOfLed() - 1);
-    ag.ledBar.setColor(0, 0, 0, ag.ledBar.getNumberOfLed() - 2);
+    ag.ledBar.setColor(0, 0, 0, ag.ledBar.getNumberOfLeds() - 1);
+    ag.ledBar.setColor(0, 0, 0, ag.ledBar.getNumberOfLeds() - 2);
     break;
   }
 }
diff --git a/examples/TestESP32/TestESP32.ino b/examples/TestESP32/TestESP32.ino
index e548d0f..70e2736 100644
--- a/examples/TestESP32/TestESP32.ino
+++ b/examples/TestESP32/TestESP32.ino
@@ -11,8 +11,8 @@
 /**
  * @brief Define test board
  */
-#define TEST_BOARD_OUTDOOR_MONITOR_V1_3 0
-#define TEST_BOARD_ONE_INDOOR_MONITOR_V9_0 1
+#define TEST_OPEN_AIR_OUTDOOR 0
+#define TEST_ONE_INDOOR 1
 /**
  * @brief Define test sensor
  */
@@ -21,21 +21,21 @@
 #define TEST_SENSOR_SGP4x 0
 #define TEST_SWITCH 0
 #define TEST_OLED 0
-#if TEST_BOARD_OUTDOOR_MONITOR_V1_3
+#if TEST_OPEN_AIR_OUTDOOR
 #define TEST_STATUS_LED 0
 #define TEST_PMS5003T 1
 #endif
 #define TEST_WATCHDOG 1
 
-#if TEST_BOARD_ONE_INDOOR_MONITOR_V9_0
+#if TEST_ONE_INDOOR
 #define TEST_LED_BAR 1
 #define TEST_SENSOR_PMS5003 0
 #endif
 
-#if TEST_BOARD_OUTDOOR_MONITOR_V1_3
-AirGradient ag(BOARD_OUTDOOR_MONITOR_V1_3);
-#elif TEST_BOARD_ONE_INDOOR_MONITOR_V9_0
-AirGradient ag(BOARD_ONE_INDOOR_MONITOR_V9_0);
+#if TEST_OPEN_AIR_OUTDOOR
+AirGradient ag(OPEN_AIR_OUTDOOR);
+#elif TEST_ONE_INDOOR
+AirGradient ag(ONE_INDOOR);
 #else
 #error "Must enable board test
 #endif
@@ -237,14 +237,14 @@ void loop() {
 
 #if TEST_LED
   static uint32_t ledTime;
-#if TEST_BOARD_OUTDOOR_MONITOR_V1_3
+#if TEST_OPEN_AIR_OUTDOOR
   // ms = (uint32_t)(millis() - ledTime);
   // if(ms >= 500)
   // {
   //   ledTime = millis();
   //   led.ledToggle();
   // }
-#elif TEST_BOARD_ONE_INDOOR_MONITOR_V9_0
+#elif TEST_ONE_INDOOR
 
   static int ledIndex;
   static int ledIndexOld;
@@ -262,7 +262,7 @@ void loop() {
     led.ledSetColor(255, 0, 0, ledIndex);
     ledIndexOld = ledIndex;
     ledIndex++;
-    if (ledIndex >= led.getNumberOfLed()) {
+    if (ledIndex >= led.getNumberOfLeds()) {
       ledIndex = 0;
     }
   }
@@ -293,7 +293,7 @@ void loop() {
   static bool ledOn = false;
 
   if (ledNum == 0) {
-    ledNum = ag.ledBar.getNumberOfLed();
+    ledNum = ag.ledBar.getNumberOfLeds();
     log_i("Get number of led: %d", ledNum);
     if (ledNum) {
       ag.ledBar.setBrighness(0xff);
diff --git a/examples/TestESP8266/TestESP8266.ino b/examples/TestESP8266/TestESP8266.ino
index 78ad5eb..fd515d6 100644
--- a/examples/TestESP8266/TestESP8266.ino
+++ b/examples/TestESP8266/TestESP8266.ino
@@ -4,8 +4,7 @@
 /**
  * @brief Define test board
  */
-#define TEST_BOARD_DIY_BASIC_KIT 0
-#define TEST_BOARD_DIY_PRO_INDOOR_V4_2 1
+#define TEST_DIY_BASIC 1
 
 /**
  * @brief Define test sensor
@@ -17,10 +16,10 @@
 #define TEST_SWITCH 0
 #define TEST_OLED 0
 
-#if TEST_BOARD_DIY_BASIC_KIT
-AirGradient ag(BOARD_DIY_BASIC_KIT);
-#elif TEST_BOARD_DIY_PRO_INDOOR_V4_2
-AirGradient ag(BOARD_DIY_PRO_INDOOR_V4_2);
+#if TEST_DIY_BASIC
+AirGradient ag(DIY_BASIC);
+#elif TEST_DIY_PRO_INDOOR_V4_2
+AirGradient ag(DIY_PRO_INDOOR_V4_2);
 #else
 #error "Board test not defined"
 #endif
diff --git a/src/main/LedBar.cpp b/src/main/LedBar.cpp
index a121ead..1b1f5ef 100644
--- a/src/main/LedBar.cpp
+++ b/src/main/LedBar.cpp
@@ -48,7 +48,7 @@ void LedBar::begin(void) {
  * @param red Color Red (0 - 255)
  * @param green Color Green (0 - 255)
  * @param blue Color Blue (0 - 255)
- * @param ledNum Index of LED from 0 to getNumberOfLed() - 1
+ * @param ledNum Index of LED from 0 to getNumberOfLeds() - 1
  */
 void LedBar::setColor(uint8_t red, uint8_t green, uint8_t blue, int ledNum) {
   if (this->ledNumInvalid(ledNum)) {
@@ -75,7 +75,7 @@ void LedBar::setBrighness(uint8_t brightness) {
  *
  * @return int Number of LED
  */
-int LedBar::getNumberOfLed(void) {
+int LedBar::getNumberOfLeds(void) {
   if (this->isBegin() == false) {
     return 0;
   }
diff --git a/src/main/LedBar.h b/src/main/LedBar.h
index dcb12b6..b2431e3 100644
--- a/src/main/LedBar.h
+++ b/src/main/LedBar.h
@@ -20,7 +20,7 @@ public:
   void setColor(uint8_t red, uint8_t green, uint8_t blue, int ledNum);
   void setColor(uint8_t red, uint8_t green, uint8_t blue);
   void setBrighness(uint8_t brightness);
-  int getNumberOfLed(void);
+  int getNumberOfLeds(void);
   void show(void);
   void clear(void);