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Cables of low toxic, fire-resistant and fire-safe for fire and intruder alarm systems, warning and evacuation control systems and data transmission, not spreading combustion, with single-wire copper conductors, cross-section from 0,20 to 2,50 mm², with the number of twisted pairs up to 12 or the number of twisted cores up to 20, insulation made of fire-resistant organosilicon rubber with low toxicity of combustion, sheathing made of polyvinylchloride plasticate of reduced fire hazard, with low smoke and gas emission and low toxicity of combustion products, for group laying, designed for operation at voltages up to 300 V inclusive of alternating current frequency of 50 Hz.