--- product_id: 589688182 title: "M12 Proximity Sensor Switch LJ12A3-4-Z/BX Detecting Distance NPN NO DC 6-36V 4mm Inductive Proximity Switch" brand: "digiyes" price: "€ 11.59" currency: EUR in_stock: true reviews_count: 2 category: "Di Gi Yes" url: https://www.desertcart.sk/products/589688182-m12-proximity-sensor-switch-lj12a3-4-z-bx-detecting-distance store_origin: SK region: Slovakia --- # DC 6-36V wide voltage range 4mm precise detecting distance 300mA stable current output M12 Proximity Sensor Switch LJ12A3-4-Z/BX Detecting Distance NPN NO DC 6-36V 4mm Inductive Proximity Switch **Brand:** digiyes **Price:** € 11.59 **Availability:** ✅ In Stock ## Summary > 🔍 Detect with precision, automate with confidence! ## Quick Answers - **What is this?** M12 Proximity Sensor Switch LJ12A3-4-Z/BX Detecting Distance NPN NO DC 6-36V 4mm Inductive Proximity Switch by digiyes - **How much does it cost?** € 11.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/589688182-m12-proximity-sensor-switch-lj12a3-4-z-bx-detecting-distance) ## Best For - digiyes enthusiasts ## Why This Product - Trusted digiyes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust & Reliable Build:** Durable alloy cylindrical design with threaded mount for secure, long-lasting performance. - • **Plug-and-Play Simplicity:** Three-wire NPN NO output with clear wiring color codes for effortless integration. - • **Power Flexibility Unleashed:** Operates seamlessly across a broad DC 6-36V range to fit diverse industrial setups. - • **Precision at Your Fingertips:** 4mm sensing distance ensures ultra-accurate metal detection for flawless automation. - • **Versatile Industrial Champion:** Perfect for 3D printers, CNC machines, elevators, and automated assembly lines. ## Overview The DiGiYes LJ12A3-4-Z/BX is a compact, high-sensitivity inductive proximity sensor designed for metal object detection within a 4mm range. Featuring a durable alloy cylindrical body, it supports a wide DC 6-36V input voltage and delivers a stable 300mA NPN normally open output. Ideal for industrial automation, 3D printing, and CNC applications, it offers reliable, repeatable performance with easy installation. ## Description Parameter Information: Model: LJ12A3-4-Z/BX Input Voltage: DC 6-36 Current: 300mA Product Name: Inductive Proximity Switch Product Model: LJ12A3-4-Z/BX Working Voltage: DC 6-36V Output Current: 300mA Output Type: 3-Wire NPN NO(Normally Open) Detecting Distance: 4mm Wiring Method: - Brown: Positive - Blue: Negative - Black: Signal Output Place of Application: - Widely used in 3D printers, industrial mechanical machine tools, automated assembly lines, automobiles, elevators, lifting equipment, etc. Note: - The power supply polarity cannot be incorrect. - The voltage should be controlled between DC 6 - 36V. - The signal output cannot be short-circuited or overloaded. - When mounted, the sensing surface of the proximity switch must protrude some distance from the metal surface. Package Include: 1 x Inductive Proximity Switch Review: Works great for my 3D printer - Got this one to add auto bed leveling to a 3D printer. Works perfectly for that usage. Make sure you get the right type! PNP/NPN, NO/NC. Also check the voltage. For my application, voltage range is great (my 3D printer is 24V, some are 12V), and NPN was what I needed. As expected the measuring distance is very repetitive which is what I needed. I like the LED on the base of the unit, helps make sure everything works as expected. Review: Make sure you know which type you need - These sensors come in both NPN and PNP. Also they are either normally open or normally closed. Make sure you know which you need before ordering. This sensor works great. I replaced a mechanical limit switch on a CNC that occasionally would get bits of wood in it. This works and it's extremely precise. I did a test where I measured the distance (using the CNC so accurate down to .001") several times. Each time the measurement was less than the machine could measure. ## Features - Three wire NPN NO (normally open) type inductive proximity switch, model LJ12A3-4-Z/BX. High sensitivity, reliable action, stable performance, long service life. - The LJ12A3-4-Z/BX sensor is an inductive metal proximity sensor for the inspection of metal objects. The sensor is small in size, low in power consumption, convenient in application, stable and reliable. - Alloy cylindrical sensor with threaded design, uniform teeth, smooth surface, firm and reliable. - Cylinder type supply voltage: DC 6 - 36V, current output: 300mA, detect metal object: Copper aluminum iron, detecting distance: 4mm. - The cylindrical sensor has a diameter of 12mm, a length of 62mm, and a thick cable length of 1.2 meters. The brown wire is connected to the positive pole of the power supply, and the blue wire is connected to the negative pole of the power supply, the black wire is the output signal wire, output type: NPN NO. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CG5WW8TK | | Best Sellers Rank | #230,273 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #63 in Inductive Proximity Sensors | | Brand Name | DiGiYes | | Current Rating | 300 Milliamps | | Customer Reviews | 5.0 5.0 out of 5 stars (2) | | Included Components | 1 x Inductive Proximity Switch | | Manufacturer | DiGiYes | | Material Type | Metal | | Maximum Supply Voltage | 36 Volts (DC) | | Measuring Range | 4mm | | Model | LJ12A3-4-Z/BX | | Mounting Type | Flange Mount | | Output Type | Digital | | Sensing Distance | 4 Millimeters | ## Product Details - **Brand:** DiGiYes - **Current Rating:** 300 Milliamps - **Material:** Metal - **Maximum Supply Voltage:** 36 Volts (DC) - **Measuring Range:** 4mm ## Images ![M12 Proximity Sensor Switch LJ12A3-4-Z/BX Detecting Distance NPN NO DC 6-36V 4mm Inductive Proximity Switch - Image 1](https://m.media-amazon.com/images/I/61tCJOUccfL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great for my 3D printer *by B***T on November 29, 2024* Got this one to add auto bed leveling to a 3D printer. Works perfectly for that usage. Make sure you get the right type! PNP/NPN, NO/NC. Also check the voltage. For my application, voltage range is great (my 3D printer is 24V, some are 12V), and NPN was what I needed. As expected the measuring distance is very repetitive which is what I needed. I like the LED on the base of the unit, helps make sure everything works as expected. ### ⭐⭐⭐⭐⭐ Make sure you know which type you need *by A***X on November 13, 2024* These sensors come in both NPN and PNP. Also they are either normally open or normally closed. Make sure you know which you need before ordering. This sensor works great. I replaced a mechanical limit switch on a CNC that occasionally would get bits of wood in it. This works and it's extremely precise. I did a test where I measured the distance (using the CNC so accurate down to .001") several times. Each time the measurement was less than the machine could measure. ## Frequently Bought Together - DiGiYes M12 Proximity Sensor Switch LJ12A3-4-Z/BX Detecting Distance NPN NO DC 6-36V 4mm Inductive Proximity Switch - GUETNEU Terminal Block, Rail Type Voltage Terminal, Rail Combined Terminal Block - Taiss 2pcs LJ12A3-4-Z/AX Proximity Switch Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close 6-36V --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/589688182-m12-proximity-sensor-switch-lj12a3-4-z-bx-detecting-distance](https://www.desertcart.sk/products/589688182-m12-proximity-sensor-switch-lj12a3-4-z-bx-detecting-distance) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-19*