diff --git a/README.md b/README.md
index 5f461c5..2f8ce14 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Arduino
 =======
 
-MySensors Arduino Library v1.5
+MySensors Arduino Library v2.0.0-beta
 
 Please visit www.mysensors.org for more information
 
diff --git a/libraries/MySensors/MyConfig.h b/libraries/MySensors/MyConfig.h
index 37b3cab..6c0b00f 100644
--- a/libraries/MySensors/MyConfig.h
+++ b/libraries/MySensors/MyConfig.h
@@ -371,7 +371,17 @@
 
 /**
  * @def MY_RF24_CHANNEL
- * @brief RF channel for the sensor net, 0-127.
+ * @brief RF channel for the sensor net, 0-125.
+ * Frequence: 2400 Mhz - 2525 Mhz Channels: 126
+ * http://www.mysensors.org/radio/nRF24L01Plus.pdf
+ * 0 => 2400 Mhz (RF24 channel 1)
+ * 1 => 2401 Mhz (RF24 channel 2)
+ * 76 => 2476 Mhz (RF24 channel 77)
+ * 83 => 2483 Mhz (RF24 channel 84)
+ * 124 => 2524 Mhz (RF24 channel 125)
+ * 125 => 2525 Mhz (RF24 channel 126)
+ * In some countries there might be limitations, in Germany for example only the range 2400,0 - 2483,5 Mhz is allowed
+ * http://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Allgemeinzuteilungen/2013_10_WLAN_2,4GHz_pdf.pdf
  */
 #ifndef MY_RF24_CHANNEL
 #define MY_RF24_CHANNEL	76
diff --git a/libraries/MySensors/drivers/RF24/RF24.cpp b/libraries/MySensors/drivers/RF24/RF24.cpp
index fc813f0..4941c91 100644
--- a/libraries/MySensors/drivers/RF24/RF24.cpp
+++ b/libraries/MySensors/drivers/RF24/RF24.cpp
@@ -388,7 +388,7 @@ RF24::RF24(uint8_t _cepin, uint8_t _cspin):
 
 void RF24::setChannel(uint8_t channel)
 {
-  const uint8_t max_channel = 127;
+  const uint8_t max_channel = 125;
   write_register(RF_CH,min(channel,max_channel));
 }
 
diff --git a/libraries/MySensors/drivers/RF24/RF24.h b/libraries/MySensors/drivers/RF24/RF24.h
index 8cbfc7c..741b3c2 100644
--- a/libraries/MySensors/drivers/RF24/RF24.h
+++ b/libraries/MySensors/drivers/RF24/RF24.h
@@ -601,7 +601,7 @@ public:
   /**
    * Set RF communication channel
    *
-   * @param channel Which RF channel to communicate on, 0-127
+   * @param channel Which RF channel to communicate on, 0-125
    */
   void setChannel(uint8_t channel);