diff --git a/src/arduino-rfm/LoRaMAC.cpp b/src/arduino-rfm/LoRaMAC.cpp
index 1ceff08..147b79d 100644
--- a/src/arduino-rfm/LoRaMAC.cpp
+++ b/src/arduino-rfm/LoRaMAC.cpp
@@ -65,10 +65,10 @@
 void LORA_Cycle(sBuffer *Data_Tx, sBuffer *Data_Rx, RFM_command_t *RFM_Command, sLoRa_Session *Session_Data,
  									sLoRa_OTAA *OTAA_Data, sLoRa_Message *Message_Rx, sSettings *LoRa_Settings, msg_t *upMsg_Type)
 {
-	static const unsigned int Receive_Delay_1 = 1000;
-	static const unsigned int Receive_Delay_2 = 2000;    // Receive_Delay_2 >= Receive_Delay_1 + RX1_Window
-	static const unsigned int RX1_Window      = 1000;
-	static const unsigned int RX2_Window      = 1000;
+    static const unsigned int Receive_Delay_1 = LoRa_Settings->Rx1_Delay;
+    static const unsigned int Receive_Delay_2 = LoRa_Settings->Rx2_Delay;
+    static const unsigned int RX1_Window = LoRa_Settings->RX1_Window;
+    static const unsigned int RX2_Window = LoRa_Settings->RX2_Window;
 
 	unsigned long prevTime = 0;
 	unsigned char rx1_ch = LoRa_Settings->Channel_Rx;
diff --git a/src/arduino-rfm/Struct.h b/src/arduino-rfm/Struct.h
index c2d4fdb..330c063 100644
--- a/src/arduino-rfm/Struct.h
+++ b/src/arduino-rfm/Struct.h
@@ -85,15 +85,19 @@ typedef struct{
 
 //Struct used for storing settings of the mote
 typedef struct {
-    unsigned char Confirm;		//0x00 Unconfirmed, 0x01 Confirmed
-    unsigned char Mport;                //Port 1-223
-    unsigned char Mote_Class;		//0x00 Class A, 0x01 Class C
-    unsigned char Datarate_Tx;		//See RFM file
-    unsigned char Datarate_Rx;		//See RFM file
-    unsigned char Channel_Tx;		//See RFM file
-    unsigned char Channel_Rx;		//See RFM filed
-    unsigned char Channel_Hopping;	//0x00 No hopping, 0x01 Hopping
-    unsigned char Transmit_Power;	//0x00 to 0x0F
+    unsigned char Confirm;          //0x00 Unconfirmed, 0x01 Confirmed
+    unsigned char Mport;            //Port 1-223
+    unsigned char Mote_Class;       //0x00 Class A, 0x01 Class C
+    unsigned char Datarate_Tx;      //See RFM file
+    unsigned char Datarate_Rx;      //See RFM file
+    unsigned char Channel_Tx;       //See RFM file
+    unsigned char Channel_Rx;       //See RFM filed
+    unsigned char Channel_Hopping;  //0x00 No hopping, 0x01 Hopping
+    unsigned char Transmit_Power;   //0x00 to 0x0F
+    unsigned int Rx1_Delay;
+    unsigned int Rx2_Delay;         // Rx2_Delay >= Rx1_Delay + RX1_Window
+    unsigned int RX1_Window;
+    unsigned int RX2_Window;
 } sSettings;
 
 typedef enum {
diff --git a/src/arduino-rfm/lorawan-arduino-rfm.cpp b/src/arduino-rfm/lorawan-arduino-rfm.cpp
index 48e2008..d55cb4e 100644
--- a/src/arduino-rfm/lorawan-arduino-rfm.cpp
+++ b/src/arduino-rfm/lorawan-arduino-rfm.cpp
@@ -111,6 +111,12 @@ bool LoRaWANClass::init(void)
     LoRa_Settings.Confirm = 0x00;         //0x00 unconfirmed, 0x01 confirmed
     LoRa_Settings.Channel_Hopping = 0x00; //0x00 no channel hopping, 0x01 channel hopping
 
+    // Set default rx delay and window
+    LoRa_Settings.Rx1_Delay = 1000; // Thing stack seems to be 5000 ms (so Rx2_delay 6000 ms)
+    LoRa_Settings.Rx2_Delay = 2000; // Rx2_Delay >= Rx1_Delay + RX1_Window
+    LoRa_Settings.RX1_Window = 1000;
+    LoRa_Settings.RX2_Window = 1000;
+
     // Initialise buffer for data to transmit
     memset(Data_Tx, 0x00, sizeof(Data_Tx));
     Buffer_Tx.Data = Data_Tx;
@@ -394,6 +400,7 @@ unsigned char LoRaWANClass::getDataRate()
 {
     return LoRa_Settings.Datarate_Tx;
 }
+
 void LoRaWANClass::setTxPower1(unsigned char power_idx)
 {
     unsigned char RFM_Data;
@@ -402,6 +409,28 @@ void LoRaWANClass::setTxPower1(unsigned char power_idx)
     RFM_Write(RFM_REG_PA_CONFIG, RFM_Data);
 }
 
+void LoRaWANClass::setRx1Delay(unsigned int ms) 
+{
+    LoRa_Settings.Rx1_Delay = ms;
+    LoRa_Settings.Rx2_Delay = max(LoRa_Settings.Rx2_Delay,LoRa_Settings.Rx1_Delay + LoRa_Settings.RX1_Window);
+}
+
+void LoRaWANClass::setRx2Delay(unsigned int ms)
+{
+    LoRa_Settings.Rx2_Delay = max(ms,LoRa_Settings.Rx1_Delay + LoRa_Settings.RX1_Window);
+}
+
+void LoRaWANClass::setRx1Window(unsigned int ms)
+{
+    LoRa_Settings.RX1_Window = ms;
+    LoRa_Settings.Rx2_Delay = max(LoRa_Settings.Rx2_Delay,LoRa_Settings.Rx1_Delay + LoRa_Settings.RX1_Window);
+}
+
+void LoRaWANClass::setRx2Window(unsigned int ms)
+{
+    LoRa_Settings.RX2_Window = ms;
+}
+
 int LoRaWANClass::readData(char *outBuff)
 {
     int res = 0;
diff --git a/src/arduino-rfm/lorawan-arduino-rfm.h b/src/arduino-rfm/lorawan-arduino-rfm.h
index 2fcc25d..33ba9c1 100644
--- a/src/arduino-rfm/lorawan-arduino-rfm.h
+++ b/src/arduino-rfm/lorawan-arduino-rfm.h
@@ -79,6 +79,10 @@ class LoRaWANClass
     unsigned char getDataRate();
     void setTxPower1(unsigned char power_idx);
     void setTxPower(int level, txPin_t pinTx);
+    void setRx1Delay(unsigned int ms);
+    void setRx2Delay(unsigned int ms);
+    void setRx1Window(unsigned int ms);
+    void setRx2Window(unsigned int ms);
     int getRssi();
     int readData(char *outBuff);
     bool readAck(void);