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IEC

PDF Standards IEC 61811-55 Ed. 2.0 b:2002

Electromechanical all-or-nothing relays – Part 55: Blank detail specification – Electromechanical all-or-nothing telecom relays of assessed quality – Two change-over contacts, 11 mm x 7,5 mm (max.) base
standard by International Electrotechnical Commission, 03/12/2002

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IEC

PDF Standards IEC 61753-382-2 Ed. 1.0 b:2015

Fibre optic interconnecting devices and passive components – Performance standard – Part 382-2: Non-connectorized single-mode bidirectional G-PON-NGA WWDM devices for category C – Controlled environment
standard by International Electrotechnical Commission, 11/05/2015

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