diff --git a/examples/Universal_Sensor_beta/fdrs_sensor.h b/examples/Universal_Sensor_beta/fdrs_sensor.h
index 036400c..791b658 100644
--- a/examples/Universal_Sensor_beta/fdrs_sensor.h
+++ b/examples/Universal_Sensor_beta/fdrs_sensor.h
@@ -59,13 +59,42 @@ extern const uint8_t prefix[5];
 
 class FDRSBase{
 public:
+ /**
+  * @brief Construct a new FDRSBase object
+  * 
+  * @param gtwy_mac     The network MAC
+  * @param reading_id   The network identifier for the sensor
+  */
 
   FDRSBase(uint8_t gtwy_mac,uint8_t reading_id);
   ~FDRSBase();
 
+  /**
+   * @brief Start a paticulare sensor.
+   */
   void begin(void);
+
+  /**
+   * @brief Set the data sor the next transmission.
+   * 
+   * @param data Data for the next transmission
+   * @param type The ID for the type of data that is being sent.
+   */
   void load(float data, uint8_t type);
+
+  /**
+   * @brief Time in seconds the sensor will delay before sending data.
+   * 
+   * @note This is blocking.
+   * 
+   * @param seconds Number of seconds to delay.
+   */
   void sleep(int seconds);
+
+  /**
+   * @brief  Send the data out on the network.
+   * 
+   */
   void send();
 
 private:
@@ -76,7 +105,17 @@ private:
   uint8_t _data_count;
   DataReading_t *fdrsData;
 
+  /**
+   * @brief Required impalamnetation of a paticulare sensors initialization.
+   */
   virtual void init(void) = 0;
+
+  /**
+   * @brief Required impalamnetation of how a sensor will send its data out on the network.
+   * 
+   * @param fdrsData    Pointer to the data that the sensor will be seding.
+   * @param _data_count The number of data packets the sensor will be sending.
+   */
   virtual void transmit(DataReading_t *fdrsData, uint8_t _data_count) = 0;
 };
 
@@ -84,12 +123,31 @@ private:
 class FDRS_EspNow: public FDRSBase{
 public:
 
+  /**
+   * @brief Construct a new fdrs espnow object
+   * 
+   * @param gtwy_mac    The network MAC.
+   * @param reading_id  The network identifier for the sensor.
+   */
+
   FDRS_EspNow(uint8_t gtwy_mac, uint8_t reading_id);
 
 private:
 
   uint8_t _gatewayAddress[ESP_GATEWAY_ADDRESS_SIZE];
+
+  /**
+   * @brief Send data out on the ESPNOW network.
+   * 
+   * @param fdrsData    Pointer to the data that the sensor will be seding.
+   * @param _data_count The number of data packets the sensor will be sending.
+   */
   void transmit(DataReading_t *fdrsData, uint8_t _data_count) override;
+
+  /**
+   * @brief Initialize the ESPNOW network
+   * 
+   */
   void init(void) override;
 
 };
@@ -97,6 +155,21 @@ private:
 class FDRSLoRa: public FDRSBase{
 public:
 
+  /**
+   * @brief Construct a new FDRSLoRa object
+   * 
+   * @param gtwy_mac    The network MAC.
+   * @param reading_id  The network identifier for the sensor.
+   * @param miso        Master in slave out pin.
+   * @param mosi        Master out slave in pin.
+   * @param sck         Master clock pin.
+   * @param ss          Slave select pin
+   * @param rst         Reset Pin 
+   * @param dio0        LoRa data pin
+   * @param band        LoRa frequency band
+   * @param sf          LoRa spread factor
+   */
+
   FDRSLoRa(uint8_t gtwy_mac, uint8_t reading_id,uint8_t miso,uint8_t mosi,uint8_t sck, uint8_t ss,uint8_t rst,uint8_t dio0,uint32_t band,uint8_t sf);
 
 private:
@@ -111,8 +184,26 @@ private:
   uint32_t _band;
   uint8_t _sf;
 
+  /**
+   * @brief Construct a LoRa packet
+   * 
+   * @param mac     Network Mac address
+   * @param packet  Data to create the packet with
+   * @param len     Length of the data in bytes
+   */
   void buildPacket(uint8_t* mac, DataReading_t * packet, uint8_t len);
+
+  /**
+   * @brief Send data out on the LoRa network.
+   * 
+   * @param fdrsData    Pointer to the data that the sensor will be seding.
+   * @param _data_count The number of data packets the sensor will be sending.
+   */
   void transmit(DataReading_t *fdrsData, uint8_t _data_count) override;
+
+  /**
+   * @brief Initialize the LoRa module 
+   */
   void init(void) override;
 
 };