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Alarm systems. Social alarm systems - Local unit and controller. Original standard UNE-EN 50134-3-2012 in PDF full version. Additional info + preview on request

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Alarm systems. Social alarm systems - Interconnections and communications. Original standard UNE-EN 50134-5-2021 in PDF full version. Additional info + preview on request

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Information technology. Generic cabling systems - Single pair cabling. Original standard UNE-EN 50173-10-2025 in PDF full version. Additional info + preview on request

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Communication cables - Common design rules and construction. Polyethylene sheathing compounds. Original standard UNE-EN 50290-2-24-2021 in PDF full version. Additional info + preview on request

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Communication cables - Common design rules and construction. Halogen free polyolefin based sheathing compounds for cables having improved flame and fire properties (HFFR). Original standard UNE-EN 50290-2-27-2021 in PDF full version. Additional info + preview on request

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Railway applications. Fixed installations. Electrical protective measures for working on or near an overhead contact line system and/or its associated return circuit. Original standard UNE-EN 50488-2021 in PDF full version. Additional info + preview on request

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