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uxcell DC6-36V 300mA NPN NO 3-wire 4mm Tubular Inductive Proximity Sensor Switch LJ12A3-4-Z-BX

4.3 out of 5 stars 9 customer reviews
| 3 answered questions
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Specifications for this item
Brand Name uxcell
Material Type Plastic,Alloy
Output Type NPN
Part Number a11031400ux0257
UNSPSC Code 39122200
A Full Selection of Industrial Electrical Supplies
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$7.56 Free Shipping for Prime Members | Fast, FREE Shipping with Amazon Prime Only 8 left in stock. Sold by uxcell and Fulfilled by Amazon. Gift-wrap available.

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Frequently Bought Together

  • uxcell DC6-36V 300mA NPN NO 3-wire 4mm Tubular Inductive Proximity Sensor Switch LJ12A3-4-Z-BX
  • +
  • 6-36VDC 4mm Detecting Distance NO Inductive Proximity Switch LJ12A3-4-Z/BY
  • +
  • LJ18A3-8-Z/BX 8mm Approach Sensor Inductive Proximity NPN NO Switch DC 6-36V
Total price: $21.48
One of these items ships sooner than the other. Show details
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Product Features

  • Product Name : Inductive Proximity Switch;Model : LJ12A3-4-Z-BX;Wire Type : 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type
  • Theory : Inductive Sensor;Output Type
    : NPN NO(Normal Open);Thread Diameter : 10.5mm/0.41";Head Diameter : 11.8mm/0.46"
  • Detecting Distance : 4mm;Supply Voltage : DC 6-36V;Current Output : 300mA;Response Frequency : 150Hz
  • Detect Object : Iron;Operating Temperature : -25°C to +55°C (Non-freezing Condition);Size : 6.2 x 2cm/2.4'' x 0.8'' (L*Max. Dia);Cable Length : 110cm/43.3"
  • External Material : Plastic, Alloy;Net Weight : 44g;Color : Silver Tone, Yellow, Gray;Package Content : 1 x Inductive Proximity Switch

Product Description

  • 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 ect.

Product Details

  • Shipping Weight: 0.3 ounces (View shipping rates and policies)
  • ASIN: B008DG9FLS
  • Item model number: a11031400ux0257
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (9 customer reviews)
  • Amazon Best Sellers Rank: #32,490 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
Customer Questions & Answers
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Customer Reviews

Top Customer Reviews

3.0 out of 5 starsIt works just fine. It registers metal at about 4mm
By Clayton on November 3, 2016
Verified Purchase
Order came as advertised. It works just fine. It registers metal at about 4mm. Unfortunately, it acts like a Normally-Closed Tubular sensor according to my 3D Printer. It registers as triggered when its plugged in, not next to metal. When the light becomes brighter, AKA It registers something, my 3D Printer registers the signal as open. This could be end user error. I could need to reflash my board. But as of right now, it doesn't work for what I need it for.
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4.0 out of 5 starsI would get one with a longer detection distance like 8mm, then with aluminum
By Joe B. on December 1, 2016
Bought this for auto leveling my 3D printer bed. I have a heated aluminum bed plate and this will detect it. With steel, the detect distance is about 4 mm but with aluminum, the detection distance is reliable at about 1 mm. I will use this but if I had it to do over again, I would get one with a longer detection distance like 8mm, then with aluminum, it would be about 2mm.
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5.0 out of 5 starsWorks great. A comment I found on Stack Exchange that ...
By James C on October 18, 2016
Verified Purchase
I converted my 3D print bed to auto leveling and am using this with a RAMPS 1.4. I put a diode on the signal line, configured the Mega 2650 with a pull-up and power the sensor at 12V. Works great. A comment I found on Stack Exchange that helped my understanding, is that the schematic on the sensor is external components, i.e. battery and load connected to the sensor wires.
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5.0 out of 5 starsWorks great for 3D Printing
By Rob on September 22, 2016
Verified Purchase
Works great for 3D Printing! Wired directly to the Z-Min endstop on the RAMPS 1.4. YES thats 5v! No voltage divider, no resistors. Plug and Play! Though I will say I am using a 3mm Aluminum plate as my printing surface, 5v is giving me a few mm sensing distance, more than enough!
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4.0 out of 5 starsGood sensor
By Insulin Man on May 6, 2016
Verified Purchase
Works well, no problems to report after well over 200 hours of printing. The only thing I did not like about this sensor was the jagged washers which I swapped out for flat ones. I get the idea behind the ones it came with, but the flat ones made adjustments much easier and precise.
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