Fire-resistant shielded cables for fire alarm system of paired twisting, with two pairs of conductive copper cores with nominal cross-section of 2,50 mm2, insulated with fire-resistant organosilicon rubber, with a screen of laminated aluminium foil and a drainage conductor under it, with an outer jacket made of polyvinyl chloride plasticate of reduced fire hazard, with low smoke and gas emission, designed for operation at voltages up to 300 V inclusive alternating current frequency of 50 Hz.
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