--- product_id: 167161360 title: "Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY" brand: "twidec" price: "€ 16.05" currency: EUR in_stock: true reviews_count: 12 category: "Twidec" url: https://www.desertcart.pt/products/167161360-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-nc-dc store_origin: PT region: Portugal --- # DC 6-36V wide voltage range 4mm precise detecting distance 300mA current output for robust switching Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY **Brand:** twidec **Price:** € 16.05 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your automation game with precision sensing that never misses a beat! ## Quick Answers - **What is this?** Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY by twidec - **How much does it cost?** € 16.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/167161360-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-nc-dc) ## Best For - twidec enthusiasts ## Why This Product - Trusted twidec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Build:** Plastic and alloy construction designed for longevity in demanding environments - • **Robust Output:** 300mA PNP NC output supports high-demand relay and control circuits - • **Reliable Detection:** 4mm sensing range ensures accurate, non-contact object detection every time - • **Seamless Integration:** Compact 12mm cylinder fits effortlessly into tight industrial setups - • **Versatile Voltage Compatibility:** Operates smoothly across 6-36V DC for flexible deployment ## Overview The Twidec LJ12A3-4-Z/AY is a compact inductive proximity sensor featuring a 4mm detection distance and a wide 6-36V DC operating voltage. Designed with a durable plastic and alloy body, it delivers a reliable 300mA PNP NC output, making it ideal for precise, non-contact detection in industrial automation, machinery, and control systems. ## Description When proximity switch is close to some target object, it will send out control signal. It is widely used in machine, paper making, light industry for limiting station, orientation taking count, speeding trial ect. It is a component widely used in automatic control industry for detecting, controlling, and noncontact switching. Review: Well - Good Review: Perfect - Worked great. Allows enough current for a 12 volt automotive relay to work. Was able to fit in with a handmade bracket to the shift gate of the stock Can-Am X3 to allow for reverse lights to come on automatically when put in the reverse position. ## Features - Product Name：Inductive Proximity Switch; Wire Type : DC 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type - Supply Voltage : DC 6-36V;Current Output : 300mA;Detect Object : Iron - Model: LJ12A3-4-Z/AY;Theory : Inductive Sensor;Output Type: PNP NC;Diameter of Column Sensor: 12mm;Detecting Distance : 4mm - Total Size: 6.2 x 2cm/2.4'' x 0.8'' (L*Max. Dia); Cable Length: 1.2m/47'';Net Weight :44g - External Material : Plastic, Alloy;Package Content : 1 x Inductive Proximity Switch ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07P2KTHK8 | | Best Sellers Rank | #122,239 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Inductive Proximity Sensors | | Date First Available | February 23, 2019 | | Item Weight | 1.41 ounces | | Item model number | JND-LJ12A3-4-Z/AY | | Manufacturer | Twidec | | Package Dimensions | 5.91 x 3.39 x 0.75 inches | ## Images ![Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY - Image 1](https://m.media-amazon.com/images/I/71rhdo5hWvL.jpg) ![Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY - Image 2](https://m.media-amazon.com/images/I/71IVV-H9kPL.jpg) ![Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY - Image 3](https://m.media-amazon.com/images/I/81miYGJty6L.jpg) ![Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY - Image 4](https://m.media-amazon.com/images/I/81RUURGU-cL.jpg) ![Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY - Image 5](https://m.media-amazon.com/images/I/71cxOrKD9eL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well *by F***E on June 22, 2025* Good ### ⭐⭐⭐⭐⭐ Perfect *by B***T on February 22, 2023* Worked great. Allows enough current for a 12 volt automotive relay to work. Was able to fit in with a handmade bracket to the shift gate of the stock Can-Am X3 to allow for reverse lights to come on automatically when put in the reverse position. ### ⭐⭐⭐⭐⭐ Using this sensor with a Monoprice Select V2 *by D***L on May 8, 2019* I purchased this inductive sensor as a bed leveling sensor for my Monoprice Select V2. After upgrading the Marlin firmware and making a few changes in the Configuration.h tab I got the sensor to work. I connected the sensor to an Arduino Uno powered with a 9v battery. The sensor is being powered with the input voltage (9v) which gives the sensor enough of a sensing distance that the sensor could be places slightly higher than the hotend nozzle (.12mm). This setup supplied enough voltage to the sensor to get it to detect the aluminum print bed. The higher the input voltage to the sensor the greater the detection distance. I will be trying a voltage divider where the sensor connects to the the Arduino Uno so I can get a higher voltage through the sensor and a lower voltage to the arduino and MKS Gen L board. ## Frequently Bought Together - Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NC DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/AY - BRINGSMART 12V 90rpm DC Worm Gear Motor 2 kg.cm High Torque Low Speed Mini Turbine Worm 12V Reducer Electric Motor Self-Locking for Toys - Onyehn Mini LED Dimmer 5A 90W,DC Motor PWM Speed Controller 3V 6V 12V 24V 35V Speed Control Switch(4 Pack) --- ## 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.pt/products/167161360-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-nc-dc](https://www.desertcart.pt/products/167161360-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-nc-dc) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*