表面镀镍或锡，导电率高，环境适应性好。
Surface nickel-plated or tinned, high conductivity and good acclimatization.
特点：外形美观，环境适应性好，安装方便快捷。
Characteristic: Pleasing in appearance, environmental adaptability, easy installation!
具有灵敏度高，响应时间快，探测距离远，环境适应性好的特点。
The flame detector benefits from high sensitivity, fast response time, long detection range and is fit for hazardous environment.
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