diff --git a/src/DHT11.h b/src/DHT11.h
index be7e094..d545c15 100644
--- a/src/DHT11.h
+++ b/src/DHT11.h
@@ -29,6 +29,11 @@ public:
    */
   DHT11(int pin);
 
+  /**
+   * Optional Initialiser
+   */
+  int begin();
+
   /**
    * Reads and returns the humidity from the DHT11 sensor.
    *