diff --git a/DFRobot_AS3935_I2C.cpp b/DFRobot_AS3935_I2C.cpp
index 7e23d8a..b499b39 100644
--- a/DFRobot_AS3935_I2C.cpp
+++ b/DFRobot_AS3935_I2C.cpp
@@ -272,7 +272,7 @@ void DFRobot_AS3935_I2C::setWatchdogThreshold(uint8_t wdth)
     // This function is used to modify WDTH. It is used to increase robustness to disturbers,
     // though will make detection less efficient (see page 19, Fig 20 of datasheet)
     // WDTH register: add 0x01, bits 3:0
-    // default value of 0001
+    // default value of 0010
     // values should only be between 0x00 and 0x0F (0 and 7)
     singRegWrite(0x01, 0x0F, (wdth & 0x0F));
 }
diff --git a/RaspberryPi/Python/DFRobot_AS3935_Lib.py b/RaspberryPi/Python/DFRobot_AS3935_Lib.py
index cca3de9..afa564c 100644
--- a/RaspberryPi/Python/DFRobot_AS3935_Lib.py
+++ b/RaspberryPi/Python/DFRobot_AS3935_Lib.py
@@ -185,7 +185,7 @@ class DFRobot_AS3935:
         #This function is used to read WDTH. It is used to increase robustness to disturbers,
         #though will make detection less efficient (see page 19, Fig 20 of datasheet)
         #WDTH register: add 0x01, bits 3:0
-        #default value of 0001
+        #default value of 0010
         #values should only be between 0x00 and 0x0F (0 and 7)
         self.singRegRead(0x01)
         return self.register[0] & 0x0F
diff --git a/RaspberryPi/Python/README.md b/RaspberryPi/Python/README.md
index 7028320..58063ec 100644
--- a/RaspberryPi/Python/README.md
+++ b/RaspberryPi/Python/README.md
@@ -120,7 +120,7 @@ def getNoiseFloorLv1(self);
 /*
  * @brief Set an anti-interference rating
  *
- * @param 0~7,More than 7 will use the default value:1
+ * @param 0~7,More than 7 will use the default value:2
  */
 def setWatchdogThreshold(self, wdth);
 
diff --git a/RaspberryPi/Python/example/DFRobot_AS3935_detailed.py b/RaspberryPi/Python/example/DFRobot_AS3935_detailed.py
index 65d5c16..2eeee53 100644
--- a/RaspberryPi/Python/example/DFRobot_AS3935_detailed.py
+++ b/RaspberryPi/Python/example/DFRobot_AS3935_detailed.py
@@ -69,7 +69,7 @@ sensor.setNoiseFloorLv1(2)
 #noiseLv = sensor.getNoiseFloorLv1()
 
 #used to modify WDTH,alues should only be between 0x00 and 0x0F (0 and 7)
-sensor.setWatchdogThreshold(1)
+sensor.setWatchdogThreshold(2)
 #wtdgThreshold = sensor.getWatchdogThreshold()
 
 #used to modify SREJ (spike rejection),values should only be between 0x00 and 0x0F (0 and 7)
diff --git a/examples/DFRobot_AS3935_lightning_sensor_detailed/DFRobot_AS3935_lightning_sensor_detailed.ino b/examples/DFRobot_AS3935_lightning_sensor_detailed/DFRobot_AS3935_lightning_sensor_detailed.ino
index 0c3fbb6..dfc60b0 100644
--- a/examples/DFRobot_AS3935_lightning_sensor_detailed/DFRobot_AS3935_lightning_sensor_detailed.ino
+++ b/examples/DFRobot_AS3935_lightning_sensor_detailed/DFRobot_AS3935_lightning_sensor_detailed.ino
@@ -82,7 +82,7 @@ void setup()
   //uint8_t noiseLv = lightning0.getNoiseFloorLvl();
 
 //used to modify WDTH,alues should only be between 0x00 and 0x0F (0 and 7)
-  lightning0.setWatchdogThreshold(1);
+  lightning0.setWatchdogThreshold(2);
   //uint8_t wtdgThreshold = lightning0.getWatchdogThreshold();
 
 //used to modify SREJ (spike rejection),values should only be between 0x00 and 0x0F (0 and 7)
diff --git a/readme.md b/readme.md
index d2375be..09a9283 100644
--- a/readme.md
+++ b/readme.md
@@ -160,7 +160,7 @@ uint8_t getNoiseFloorLvl(void);
 /*
  * @brief Set an anti-interference rating
  *
- * @param 0~7,More than 7 will use the default value:1
+ * @param 0~7,More than 7 will use the default value:2
  */
 void setWatchdogThreshold(uint8_t wdth);