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4．Main Features 产品特点
1) Immediate functioning of heat sensing，measuring and monitoring after installation．Capable of detecting any over temperature at the initial stage of a fire hazard along its length．During operation, one end of the alarm cable transmits the coded fire alarm signal via the addressable port to the controller；the other end is connected to the junction box．When the ambient temperature reaches the preset value，the temperature sensitive insulating material in the two current-carrying conductors will fuse, causing a short circuit between the two conducting wires．When the encoder receives the short circuit signal．it gives an alarm signal to the controller．
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1) 本产品安装后便能时刻进行感温测控工作。可在火灾初期就能够及时探测沿其长度范围内任一点的超温。工作时，报警电缆一端通过编码接口将编码火警信号送到控制器另一端接于终端盒上，当环境温度达到预定值时，两根载流导体内的热敏绝缘物熔化，二根导线短路，编码器接受这一短路信号，向控制器报警。
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2) The heat sensitive fire alarm cable functions well even in some particular working environment(e.g.．dusty，damp or corrosive) and has excellent interference immunity．
3) Capable of monitoring a large area，indirect indication of specific location of fire hazard, automatic linkage to the fire-proof door and fire fighting equipment to prevent spreading of fire as well as giving out alarm at over temperature of cable, thus providing reliable early-warning of fire hazard．
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2) 火灾感温报警电缆能适用于工程的特殊环境要求，(如在粉尘湿度大及易腐蚀等恶劣环境)具有较强的抗干扰能力。
3) 该产品监视面积大，能间接显示发生火灾的具体位置，能自动联动防火门和灭火设备，防止火势蔓延。也可以对电缆超过正常工作温度而报警，起到良好预防火警效果。
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