Walfront Hall NPN Sensor NJK-5002C Hall Effect Proximity Switch 3-Wires Normally Open With Magnet
Why you'll like it
- Reliable Detection — Features a 10mm detection distance for accurate permanent magnet sensing
- Easy Integration — 3-wire normally open NPN output connects directly with TTL, MOS, and logic circuits
- Versatile Power — Supports a wide supply voltage range from 5 volts to 36 volts DC
- Durable Build — Compact M12 copper cylinder housing ensures long life and simple installation
Product details
Description
The Walfront Hall NPN Sensor NJK-5002C is a high-performance proximity switch designed for precise magnetic field detection in automation and DIY projects. Built with an integrated voltage regulator, voltage generator, difference amplifier, Schmitt trigger, and open collector output, this sensor delivers a reliable digital voltage response.
Featuring an M12 cylindrical appearance, it offers a 10mm detection distance and supports a wide supply voltage range from 5 volts to 24 volts or 6 volts to 36 volts DC. Its 3-wire normally open configuration allows seamless integration with microcontrollers, transistors, TTL, and MOS logic circuits.
Ideal for applications such as digital tachometers, motor speed monitoring, and position sensing, this durable sensor ensures high switching frequency and strong anti-interference capability for professional and hobbyist electronics setups.
How to use
- Connect the brown wire to the positive power source, the blue wire to the negative power source, and the black wire to the digital input or logic circuit.
- Mount the M12 cylindrical sensor securely and position a permanent magnet within the 10mm detection range to trigger the digital voltage output.
Ingredients
Copper housing shell, internal silicon semiconductor circuitry, integrated voltage regulator, Schmitt trigger, and open collector output components.
As printed by the brand. Check the pack label if you have an allergy.
Specifications
| Brand | Walfront |
|---|---|
| Ships from | USA (sourced directly), checked in Navi Mumbai |
| Sold by | Dropy.in |
Ratings & reviews
From our customers
Top reviews first: highest rated, with photos first
- Vaishali K.5 ★
ekdum mast kaam karto
mulacha science exhibition project hota tyasathi ha proximity switch lagla hota. mala vatla navta evdha lakar jamel pan package madhe magnet sobat ala hota tyamule laglich testing shuru keli. normally open setup mude relay module sobat ekdum fast respond karto.
- Amit S.5 ★
awesome magnetic switch
youtube pe diy video dekh ke order kiya tha. apna rpm counter project banane ke liye use kar raha hu. isme jo 3 wire configuration hai usse arduino ke sath connect karna bilkul easy ho gaya. delivery bhi time pe mil gayi thi.
- Tushar D.5 ★
khupach bhari sensor aahe
monsoon madhye moisture mule amcha automatic gate wala setup kharab hot hota mhanun ha magvla. tyala wire karayla sopam zala ani detection distance ekdum barobar 10mm kaam karto ahe. maza project atata clean chaltoy nusta.
- Vikram M.4 ★
was skeptical par badhiya nikla
shuru me laga ki sasta wala hai toh thik se work nahi karega but 5v to 24v range me ye solid perform kar raha hai. main isko small fan automation ke liye use kar raha hu. bas packaging thoda sa normal cardboard box me thi, lekin andar product safe tha.
FAQs
How does a 3 wire Hall sensor work?
A 3-wire Hall sensor utilizes a power input wire, a ground wire, and an output signal wire. When a magnetic field crosses the sensing threshold, it changes the state of the internal solid-state switch to deliver a digital voltage signal to your connected circuit or microcontroller.
What is a Hall effect proximity switch?
A Hall effect proximity switch is a non-contact electronic sensor that detects the presence of a magnetic field. It switches its electrical output on or off when a magnet approaches within its specified operating range.
What is the difference between NPN and PNP Hall-effect sensors?
An NPN sensor switches the output to the ground or negative rail when triggered, making it compatible with sinking inputs. A PNP sensor switches the output to the positive voltage rail, working with sourcing inputs.
Are these industrial automation sensors authentic USA imports available in India?
Yes, this product is sourced directly from the USA to ensure genuine manufacturer quality and performance standards. Dropy brings authentic imported industrial components straight to your doorstep in India.
What objects can the NJK-5002C sensor detect?
This sensor is specifically designed to detect permanent magnets. When a suitable magnet comes within the 10mm detection distance, the sensor activates its digital output.
How long will delivery take?
Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.
Is cash on delivery available?
Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.
Are your products genuine?
Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.
What if my order arrives damaged or wrong?
Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.
Is delivery free?
Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.