From IDEC Corp.FOR AN operator faced with an emergency situation, using emergency stop switches is the last possible measure to avoid accidents. Development of a new emergency stop switch helps assure an operator's safety against foreseeable failure. Emergency stop switches must send a stop command to machines and systems without failure. Many international standards have been written to ensure emergency stop switches meet both functional and structural requirements. It has been discovered, however, that the structure of conventional emergency stop switches cannot shut down system operations when improperly installed or operated with an excessive amount of force.