GB/T 31070.1-2014 Building intercom systems—Part 1:General technical requirements

GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2829-2002 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) GB/T 9254-2008 Information technology equipment—Radio disturbance characteristics—Limits and methods of measurement GB/T 15211-2013 Security alarm equipments—Environmental adaptability requirements and test methods GB 16796-2009 Safety requirements and test methods for security alarm equipment GB/T 30148-2013 Security alarm equipments—EMC immunity requirements and test methods ITU-T P.50 ITU-T P.51-1996 ITU-T P.57-2011 ITU-T P.79-2007 ITU-T P.501 GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 20138-2006 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts(IK code) GB/T 20138-2023 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts(IK code)