It is a component widely used in automatic control industry for detecting, controlling, and noncontact switching. When the 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 ect. Features: Product Name : Inductive Proximity Switch; Model: LJ18A3-8-Z/BX 5V ; Wire Type: DC 3 Wire Type Brown, Black, Blue); Switch Appearance Type: Cylinder Type Theory: Inductive Sensor; Output Type : NPN NO(Normal Open); Diameter of Head: 18mm; Detecting Distance : 5mm Supply Voltage : DC5V; Current Output : 300mA; Detect Object : Iron Operating Temperature : -25C to +55C (Non-freezing Condition); Size : 7 x 3cm/2.8'' x 1.2'' (L*Max. Dia); Cable Length : 103cm / 40.55" External Material: Plastic, Alloy; Net Weight : 80g; Package Includes: 1 x Proximity Sensor high RPM Dia 8mm tip size 1mm sensing distance NPN