ITU Radio Regulations
Industrial, scientific and medical (ISM) applications (of radio frequency energy) (short: ISM applications) are – according to "article 1.15" of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR) – defined as «"Operation of equipment or appliances designed to generate and use locally radio frequency energy for industrial, scientific, medical, domestic or similar purposes, excluding applications in the field of telecommunications".»