IEC 60730-2-13:2017 applies to automatic electrical humidity sensing controls for use in, on or in association with equipment, including controls for heating, air-conditioning and similar applications. The equipment may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof. This Standard is applicable to automatic electrical humidity sensing controls forming part of a building automation control system within the scope of ISO 16484. This standard also applies to automatic electrical humidity sensing controls for equipment that may be used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications. This standard does not apply to automatic electrical humidity sensing controls intended exclusively for industrial process applications unless explicitly mentioned in the equipment standard. This standard applies to automatic electrical controls, mechanically or electrically operated, responsive to or controlling humidity. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes alignment with the text of 60730-1 fifth edition and the following significant technical changes with respect to the previous edition: - alignment of the EMC requirements in Clause H.26 to those in other part 2 standards; - addition of requirements in Clause H.27 to cover class B and C control functions of humidity sensing controls. This Part 2-13 is intended to be used in conjunction with IEC 60730 1. It was established on the basis of the fifth edition of that standard (2013). Consideration may be given to future editions of, or amendments to, IEC 60730-1. This Part 2-13 supplements or modifies the corresponding clauses in IEC 60730-1, so as to convert that publication into the IEC standard: Particular requirements for humidity sensing controls. Where this Part 2-13 states "addition", "modification" or "replacement", the relevant requirement, test specification or explanatory matter in Part 1 should be adapted accordingly. Where no change is necessary, this Part 2-13 indicates that the relevant clause or subclause applies. The contents of the corrigendum of February 2018 have been included in this copy.