Cableless Control : Control devices employing cableless (e. g. , radio, infrared) techniques for transmitting commands and signals between a machine control system and operator control station(s)
NFPA 79 Electrical Standard for Industrial Machinery, 2002 ed. http://www.nfpa.org/assets/files/AboutTheCodes/79/ 79-A2002-rop.pdf, (Electr Std for Ind Machinery - Amer) {225 NFC}