Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX
Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX
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Looking to buy Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX at the best price in India? Tech Depot India offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
Quality electronics from Tech Depot India, Bengaluru.
Specifications
| Parameter | Details |
| Model | LJ12A3-4-Z/BX |
| Sensor Type | Inductive Proximity Sensor |
| Output Type | NPN (Normally Open) |
| Operating Voltage | DC 5V - 36V |
| Detection Distance | 4mm (adjustable) |
| Switch Type | Normally Open (NO) |
| Housing | Tube Type / Cylindrical |
| Connection | 3-Wire |
| Response Time | Fast & Reliable |
| Origin | Original/Authentic |
Why Choose Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX?
100% Authentic
GST Invoice - A GST invoice is included with every order.
Expert Support - Dedicated technical help on WhatsApp and email.
Pan-India Delivery - Shipped across Bengaluru, Delhi NCR, Hyderabad and all of India.
Trusted by Makers - Used by students, hobbyists and professionals nationwide.
Key Features of Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX
Wide Voltage Range - Works with DC 5V to 36V power supplies
4mm Detection Range - Precise metal object detection
NPN Output - Compatible with standard industrial controllers
Normally Open Switch - Activates when metal approaches
Compact Tube Design - Easy installation in tight spaces
Durable Construction - Built for industrial environments
Fast Response Time - Real-time detection performance
Low Power Consumption - Energy-efficient operation
Perfect For
Product Overview
The LJ12A3-4-Z/BX is a professional-grade inductive proximity sensor designed for reliable object detection in industrial and automation applications. With its compact tube design, wide voltage range, and precise 4mm detection distance, this NPN sensor delivers consistent performance for metal detection tasks.
Industrial Automation
- Conveyor belt systems
- Assembly line detection
- Machine positioning
- Part counting systems
DIY & Hobbyist Projects
- Robotics and automation projects
- Security systems
- Object detection circuits
- Arduino/Raspberry Pi projects
Professional Installations
- Manufacturing equipment
- Smart door systems
- Proximity-based controls
- Industrial sensors
Educational Use
- Electronics learning
- Sensor technology education
- Control system projects
- STEM applications
How It Works
The LJ12A3-4-Z/BX uses electromagnetic induction to detect ferrous and non-ferrous metal objects. When a metal object enters the 4mm detection zone, the sensor triggers its NPN output, which can be used to control relays, microcontrollers, or other devices.
Detection Range: Up to 4mm from sensor face
Output: Switches from OFF to ON when metal detected
Reset: Automatic when metal leaves detection zone
Connection Guide
| Pin | Function |
| Brown | Positive (DC+) |
| Blue | Negative (DC-) |
| Black | Output (NPN) |
What's Included in the Box
1x LJ12A3-4-Z/BX Inductive Proximity Sensor
Technical datasheet & documentation
Installation guide reliable customer support accessProduct Quality Assurance
100% Authentic - Verified from authorized suppliers
Quality Tested - Each unit tested before dispatch
Factory Fresh - Original sealed packaging
- Full manufacturer coverage
Frequently Asked Questions
Is this sensor 100% authentic?
Yes, absolutely. Each product comes with verification documentation.
What voltage range does it support?
The LJ12A3-4-Z/BX operates on DC 5V to 36V, making it compatible with most industrial power supplies and microcontroller systems.
What is the detection distance?
The sensor has a 4mm detection range, meaning it can detect metal objects up to 4mm away from the sensor face. This distance is adjustable through the sensor's potentiometer.
Is this NPN or PNP?
This is an NPN sensor with Normally Open (NO) output, suitable for standard industrial controllers and microcontroller applications.
Can I use this with Arduino/Raspberry Pi?
Yes! The NPN output is fully compatible with Arduino, Raspberry Pi, and other microcontroller platforms. Simply connect to a digital input pin.
What's your return policy?
Customer Support
Email: techdepotindia@gmail.com
WhatsApp: Available for setup and troubleshooting help
Order your Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX today and start building your next project.
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