Do Not Alter State of Switch Label
This Do Not Alter State of Switch ISO graphical symbol is intended for use only where there is a risk to personnel or others. It may appear in safety signage in workplaces and public areas, safety manuals and notices, and product labeling.
The use of standardized safety signs and symbols does not replace proper work methods, instructions and accident prevention training or measures. Education is an essential part of any system that provides safety information. This ISO 7010 ISO P031 safety symbol has been validated by ISO/TC 145/SC 2 according to procedures of standardization current at the time of publication.
This Do Not Alter State of Switch iso symbol is applicable to all locations where safety issues related to people need to be addressed. However, it is not applicable to the signalling used for guiding rail, road, river, maritime and air traffic in general.