Cables of increased fire resistance for fire alarm system of twisted pair, with one pair of conductive copper cores with nominal cross-section of 1,50 mm2, insulated with fire-resistant organosilicon rubber, with additional thermal barrier in the form of winding from mica-containing tape, with an outer jacket made of polyvinyl chloride plasticate of reduced fire hazard, with low smoke and gas emission and low toxicity of combustion products, designed for operation at voltages up to 300 V inclusive alternating current frequency of 50 Hz.
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