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3. Provisions relating to existing installations
Existing alarm systems in good working order on the date of publication of the present technical instruction may be maintained without modification, even if they do not comply with the present provisions.
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Provisions relating to existing installations
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- Fire detection equipment – Linear heat and multipoint smoke detectors and intermediaries (Classification number: S61-950) - NF S61-950 - 01-04
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The Ultimate Scientific and Technical Reference