Omron has launched the D41 Series Safety Door Switch that reduces the risk of interlock devices being deactivated, for a safe and worry-free production site. Safety components perform their safety functions only when properly used. Some industrial accidents were caused by tampering with interlocking devices used for safety guards, although they could have been prevented. There is an effort to standardize prevention of tampering. Many countries have therefore implemented EN ISO 14119:2013 that defines the measures required to minimize defeat of interlocking devices. This is becoming the global standard to prevent accidents.