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IEC 60050-561 Amd.4 Ed. 2.0 b:2021

Amendment 4 – International Electrotechnical Vocabulary (IEV) – Part 561: Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection
Amendment by International Electrotechnical Commission, 08/01/2021

IEC 63218 Ed. 1.0 b:2021

Secondary cells and batteries containing alkaline or other non-acid electrolytes – Secondary lithium, nickel cadmium and nickel-metal hydride cells and batteries for portable applications – Guidance on environmental aspects
standard by International Electrotechnical Commission, 08/01/2021

IEC 61000-4-11 Ed. 3.0 b Cor.1:2020

Corrigendum 1 – Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement techniques – Voltage dips, short interruptions and voltage variations immunity tests
Corrigenda by International Electrotechnical Commission, 05/28/2020

IEC 61280-4-1 Amd. 1 Ed. 3.0 b:2021

Amendment 1 to Fibre-optic communication subsystem test procedures – Part 4-1: Installed cabling plant – Multimode attenuation measurement
Amendment by International Electrotechnical Commission, 12/01/2021

IEC 62484 Ed. 2.0 en:2020

Radiation protection instrumentation – Spectroscopy-based portal monitors used for the detection and identification of illicit trafficking of radioactive material
standard by International Electrotechnical Commission, 10/01/2020