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 send out control signal. As it is capacitive type proximity switch, its detecting object target is not limited to only conductor, but also liquid and even powder things, like plastic, water, glass, oil, etc. It's widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial . Product Name: Capacitive Proximity Switch; Model: LJC30A3-H-Z/AY; : Capacitance Sensor Wire Type: Cylindrical DC 3 Wire Type (Brown, Black, Blue); Switch Appearance Type: Cylinder Type Current Output: 300mA; Supply Voltage: DC 6-36V Cable Length: 120cm/47 inch; Operating Temperature: -25° C to +70° C(Non-freezing Condition); Diameter of Head: 30mm; Detecting Distance: 1-25mm; Output Type: PNP NC(Normal Close). External Material: Plastic, Alloy; Net Weight: 441g Color: Silver Tone, Yellow, Gray; Package Content: 3 x Capacitive 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.