LJ12A3-4-Z/BX Cylindrical Inductive Proximity Detection Sensor Approach Switch NPN DC6-36V 4mm Imported Product Name: Inductive Proximity Switch; Model:LJ12A3-4-Z/BX Theory Inductive Type Sensor. Wire Type Cylindrical DC 3 Wire Type (Brown, Black, Blue). Switch Appearance Type:Cylinder Type, Metal Shell . Output Type:NPN, NO Detecting Distance:4mm. Supply Voltage DC 6-36V. Current Output:300 mA. Response Frequency :100Hz Detect Object:Iron. Column Sensor Diameter:12mm. Cable Length :1.1M External Material Plastic, Metal