This part of IEC 61310 specifies safety-related requirements for actuators, operated by the hand or by other parts of the human body, at the human-machine interface. It gives general requirements for – the standard direction of movement for actuators; – the arrangement of an actuator in relation to other actuators; – the correlation between an action and its final effects. It is based on IEC 60447 but is also applicable to non-electrotechnical technologies such as mechanical and fluid-powered systems. It covers single actuators as well as groups of actuators forming part of an assembly. This standard does not specify any requirements for "touch screens" (such information is given in IEC 60073).