Historical
DIN EN 574:2008
Safety of machinery - Two-hand control devices - Functional aspects - Principles for design; German version EN 574:1996+A1:2008
The document specifies the safety requirements of a two-hand control device as a safety device which requires both hands of one person to initiate and also to maintain the operation of a machine. It describes the main characteristics of two-hand control devices for the achievement of safety and sets out combinations of functional characteristics for three graduated types.
Deutsches Institut für Normung [din]