LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity
LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity
LJ18A3-8-ZBX 8mm Inductive Proximity Approach Sensor
Reliable non-contact metal detection for automation, CNC machines, and robotics projects. This M18-threaded inductive proximity sensor from The Tech Depot, Bengaluru offers an 8mm sensing distance with NPN normally open output - ideal for industrial control, 3D printer homing, and DIY automation. Fast shipping, 7-day warranty on manufacturing defects, and expert support included.
Specifications
| Model | LJ18A3-8-ZBX |
| Sensor Type | Inductive Proximity Sensor (Non-Contact) |
| Detection Distance | 8mm (adjustable) |
| Output Type | NPN Normally Open (NO) - 3-Wire DC |
| Operating Voltage | DC 6V-36V |
| Output Current | <=300mA |
| Thread Size | M18 x 1 (18mm diameter barrel) |
| Housing Material | Nickel-plated brass body |
| Sensing Face | Non-shielded (flush mounting not required) |
| Detectable Materials | Ferrous metals (iron, steel); reduced range for non-ferrous (aluminum, copper, brass) |
| Switching Frequency | <=500Hz |
| Response Time | <=1ms |
| Protection Rating | IP67 (dust-tight and water-resistant) |
| Operating Temperature | -25 degreesC to +70 degreesC |
| Indicator | Built-in LED for detection status |
| Cable Length | Approximately 1.2m (3-wire: Brown = V+, Blue = V, Black = Signal) |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the LJ18A3-8-ZBX?
- Generous 8mm sensing range - detects metal objects reliably without physical contact, reducing mechanical wear
- Wide voltage compatibility (6V-36V DC) - works seamlessly with Arduino (via pull-up), PLC inputs, industrial controllers, and 12V/24V automation systems
- IP67-rated rugged construction - nickel-plated brass barrel withstands dust, moisture, vibration, and harsh workshop environments
- Fast 500Hz switching - suitable for high-speed counting, RPM measurement, and rapid position detection
- Built-in LED indicator - instantly confirms detection status during installation and troubleshooting
- Standard M18 thread with nuts included - easy panel or bracket mounting with precise distance adjustment
- 100% authentic from trusted, verified suppliers
- 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse across India
- Expert technical support included for wiring guidance and integration help
Wiring Guide
| Wire Color | Connection |
| Brown | V+ (6-36V DC positive supply) |
| Blue | V (DC ground / GND) |
| Black (Signal) | NPN NO output - connects to PLC input, microcontroller digital pin (with pull-up resistor), or relay module |
Note: NPN output sinks current to ground when activated. For Arduino use, connect the signal wire to a digital input pin with a 10kOhm pull-up resistor to 5V. The pin reads LOW when metal is detected and HIGH when no metal is present.
Project Ideas
- 3D Printer Auto Bed Leveling & Homing: Use as an endstop or Z-probe for precise metal bed detection on printers like Ender 3, Prusa, and custom CoreXY builds.
- CNC Machine Home & Limit Switches: Replace mechanical limit switches with this wear-free sensor for reliable axis homing on CNC routers, mills, and laser cutters.
- Industrial Conveyor Object Counting: Detect and count metal parts on production lines with the fast 500Hz response for accurate throughput monitoring.
- Robotic Arm Position Feedback: Integrate into robotic joints or end-effectors for non-contact position confirmation and collision avoidance.
- RPM & Speed Measurement: Mount near a rotating shaft with a metal target to measure motor RPM for tachometer or closed-loop speed control projects.
- Automated Door & Gate Systems: Detect vehicle or metal gate positions for automatic opening/closing systems in parking and access control.
- Arduino & Raspberry Pi
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity Online in India
Purchase the LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy LJ18A3-8-ZBX 8mm Approach Sensor Inductive Proximity at the best price in India? The Tech Depot 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.