德国施克（SICK）WL140-2N132光电开关
可调校的高精度北京遮蔽功能
不受周围光源干扰（如HF高频光和闪烁的报警灯）
两传感器即使对面安装仍能可靠工作
工作温度为-40...600C
快速的响应时间
WTB4-3P3161
WTB4-3E1360S46 
WTB4-3E1361 
WTB4-3E2161 
WTB4-3E3161 
WTB4-3F1361 
WTB4-3F2161 
WTB4-3F2162 
WTB4-3F3161 
WTB4-3N1061S31 
WTB4-3N1160S53 
WTB4-3N1161 
WTB4-3N1164 
WTB4-3N1361 
WTB4-3N1361S16 
WTB4-3N1362 
WTB4-3N1371 
WTB4-3N2161 
WTB4-3N2162 
WTB4-3N2171 
WTB4-3N3161 
WTB4-3N3162 
WTB4-3N3171 
WTB4-3N3212S55 
WTB4-3P1161 
WTB4-3P1264 
WTB4-3P1361 
WTB4-3P1362 
WTB4-3P1371 
WTB4-3P2161 
WTB4-3P2161S28 
WTB4-3P2162 
WTB4-3P2171 
WTB4-3P2261 
WTB4-3P2261S44 
WTB4-3P2262 
WTB4-3P2262S41 
WTB4-3P2264 
WTB4-3P2264S32 
WTB4-3P2271 
WTB4-3P3061S15 
WTB4-3P3061S20 
WTB4-3P3161 
WTB4-3P3161S02 
WTB4-3P3161S11 
WTB4-3P3162 
WTB4-3P3162S04 
WTB4-3P3162S45 
WTB4-3P3162S56 
WTB4-3P3171 
WTB4-3P3212S54 
WTB4-3P3212S61 
WTB4-3P3214S59 
WTB4-3P3261 
WTB4-3P3261S27 
WTB4-3P3261S51 
WTB4-3P3264 
WTB4-3P3264S03 
WTB4-3P3264S30 
WTB4-3P3461 
WTB4-3P3464