1 files changed, 2 insertions, 0 deletions
diff --git a/Srf10.h b/Srf10.h
index c7417b8..1b69018 100644
--- a/Srf10.h
+++ b/Srf10.h
@@ -19,6 +19,7 @@ private:
 	int firmware;
 	
 	long distance;
+	bool has_distance;
 	
 	Srf10Units unit;
 	
@@ -39,6 +40,7 @@ public:
 	
 	long updateDistance();
 	long getDistance() {return distance;}
+	bool hasDistance() {return has_distance;}
 };
 
 #endif