Reference: RBD-0315
US-015 Ultrasonic Module Distance Measuring Transducer Sensor
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The LJ12A3-4-Z/BX Inductive Proximity Sensor is a robust and high-precision sensor designed to detect metallic objects within a 4mm range. It features an NPN Normally Open (NO) output for easy interfacing with microcontrollers, PLCs, or relay systems. With its 6–36V DC operating range, fast 100Hz response frequency, and durable M12 metal body, this sensor delivers reliable performance in industrial, automation, and robotics applications. Compact, energy-efficient, and simple to install, it’s a dependable choice for proximity detection in professional and DIY setups alike. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Precise Inductive Detection: Detects metal targets within a 4mm sensing distance.
NPN NO Output: Provides a ground signal when metal is detected — easy for control systems to interpret.
Wide Voltage Range: Operates from 6–36V DC, suitable for most industrial and embedded systems.
Fast Response Time: 100Hz frequency ensures accurate and immediate signal output.
Durable M12 Body: Nickel-plated brass housing with IP65 protection for industrial reliability.
1-Meter Cable: Flexible installation and connection to controllers or relays.
Low Power Consumption: Efficient output current up to 300mA.
Wide Temperature Range: Operates reliably between -25°C and +65°C.
Noise Immunity: Stable output even in electrically noisy environments.
Easy Mounting: Compact cylindrical form fits into tight or embedded spaces.
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3D Printers: Detect bed leveling or end-stops with precision.
Industrial Automation: Use for metal object counting or position sensing in production lines.
Robotics: Detect metallic surfaces or objects for obstacle avoidance.
Machinery Safety: Ensure metal components are correctly positioned before activation.
DIY Projects: Perfect for makers working on automation or sensing systems.
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| General Specifications | |
| Model | LJ12A3-4-Z/BX |
| Sensor Type | Inductive Proximity Sensor |
| Output Type | NPN Normally Open (NO) |
| Detection Range | 4mm (depending on target metal type) |
| Detectable Material | Ferrous/Non-ferrous metals |
| Supply Voltage | DC 6–36V |
| Output Current | Max. 300mA |
| Response Frequency | 100Hz |
| Operating Temperature | -25°C to +65°C |
| Cable Length | 1 meter |
| Wiring | Brown: VCC (+), Blue: GND (-), Black: Signal output |
| Housing Type | M12 threaded cylindrical metal |
| Protection Rating | IP65 |
| Dimensions | 12mm diameter × 60mm length (approx.) |
| Shipping Weight | 0.0438 kg |
| Shipping Dimensions | 12 × 8 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Wiring:
Installation:
Operation:
Testing:
1 x LJ12A3-4-Z/BX Inductive Proximity Sensor NPN NO 4mm Detection Range M12
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