SICK光电开关WLL160(T)/WLL170(H/A/T)/WLL190T/WLL12/WLL24-2Exi/WLL260产品：WLL160(T);WLL170(H/A/T);WLL190T;WLL12;WLL24-2Exi;WLL260;特性；光纤式光电开关-***和***在统一单元,适用于安装空间狭小的应用;激光光电开关-检测距离大,光斑小；)