diff --git a/source/RobotAPI/units/ForceTorqueObserver.h b/source/RobotAPI/units/ForceTorqueObserver.h
index bbbc0243634fe1392e2606eda9df4acb3b634492..fbaa7edde74f46e25ccbcd4c69f4401d0347615f 100644
--- a/source/RobotAPI/units/ForceTorqueObserver.h
+++ b/source/RobotAPI/units/ForceTorqueObserver.h
@@ -18,6 +18,10 @@ namespace armarx
         }
     };
 
+    /**
+     * The ForceTorqueObserver monitors F/T values published by ForceTorqueUnit-implementations and offers condition checks on these values.
+     * Available condition checks are: updated, larger, equals, smaller, magnitudelarger.
+     */
     class ForceTorqueObserver :
             virtual public Observer,
             virtual public ForceTorqueUnitObserverInterface