Product Name : Inductive Proximity Switch Model : LJ18A3-8-Z or BX Wire Type : DC 3 Wire Type (Black, Brown, Blue) Switch Appearance Type : Cylinder Type : Inductive Sensor Output Type: PNP NO(Normal Open) Diameter of Head : 18mm Detecting Distance : 8mm Supply Voltage : DC 6-36V Current Output : 300mA Detect Object : Iron External Material : Plastic, Alloy Net Weight : 640g It is a component widely used in automatic control industry for detecting, controlling, and noncontact switching. When proximity switch is close to some target object, it will send out control signal. It's widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial . Package Content : 8 x Inductive Proximity Switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.