SICK Proximity switch series: 
 IH04-OB8NS-VT1 
 IH06-1B5NS-VTK 
 IQ05-0B8NS-ZU1 
 IQ08-02BNS-KTO 
 IQ10-03BPO-KT1 
 IQ10-03BPS-KT1 
 IQ12-03BPS-KT0 
 IQ40-15BPP-KKO 
 IM12-04BPS-ZC1 
 IM12-04NNS-ZW1 
 IM12-04NPS-ZW1 
 IM08-02NNS-ZW1 
 IM12-04BPS-ZC1 
 IM18-05BPS-ZC1 
 IM18-05BPS-ZCK 
 IM18-08NPS-ZWQ 
 IM30-10BDS-ZW1 
 IM3015BNS-ZW1. 
 Some common SICK Model: 
 WT4-2N132 
 WL9-2N131 
 WL9-2P431 
 WL9-2N131 
 WS/WE9-2N130 
 WS/WE9-2N430 
 WL12-2B560 
 WL12-2B560S37 
 WL14-P132P01 
 WS/WE12L-2N430 
 WT18-3P610 
 WT24-2B420 
 WL23-F132 
 WS/WE24-2B230 
 WL34-B430 
 WS/WE100-N1439 
 WT160-F450 
 WS/WE150-P430 
 WT150-T430 
 WT18-3P610 
 WT250-S162 
 WL170-N122 
 WT170-N132 
 WT170-N430 
 WS/WE-170-N132 
 WT150-N162 
 WT150-N460 
 WS/WE-150-N132 
 WL150-N132 
 VS/VE-180-N132 
 VT180-N133 
 VL180-N162 
 WL260-R270 
 WT260-R260 
 WS/WE260-S270 
 WS/WE260-R230 
 WT250-P460 
 WT250-N162 
 WL250-S132 
 WL250-P430 
 WS/WE250-N132 
 WLL170-N132 
 WLL160-E122 
 WT160-N122 
 WL160-N440 
 WL160-N132 
 WLS/WE160-142 
 Extension Cable DOL-1205-G05M 
 WTA24-P5201S05 
 VL18-3N3112 
 NT6-04012 
 WL2