About this item

🛡️ NPN Inductive Proximity Sensor LJ12A3-4-Z/BX

The LJ12A3-4-Z/BX is an NPN inductive proximity sensor designed to detect metallic objects without physical contact.
It is ideal for industrial automation, robotics, and DIY projects that require reliable object detection.

⚡ Key Features

• 🔌 Output type: NPN (Normally Open / NO)
• 📏 Detection distance: 4 mm
• ⚡ Supply voltage: 6–36 V DC
• 🌡️ Operating temperature: -25°C to +70°C
• 🔧 Wiring: 3 wires (Brown = +V, Blue = GND, Black = Signal)
• 🛠️ Mounting: M12 thread, 50 mm length

🛡️ Advantages

• 🔄 Contactless detection reduces wear
• ⚡ Fast and reliable response
• 🧩 Compact and easy to integrate
• 🌐 Compatible with microcontrollers and logic circuits

🛠️ Applications

• 🤖 Industrial automation and robotics
• 🔧 Position or end-of-travel detection
• 🧪 Mechatronic and DIY projects
• 💡 Security systems and alarms

⚠️ Usage Notes

• ❗ Detects metallic objects only
• 🔧 Verify polarity before wiring
• 🛡️ Avoid strong magnetic fields near the sensor

✨ Technical Specifications

• 📏 Detection distance: 4 mm
• ⚡ Voltage: 6–36 V DC
• 🔌 Output type: NPN, normally open (NO)
• 🔧 Wiring: 3 wires
• 📏 Dimensions: M12 × 50 mm
• 🌡️ Temperature: -25°C to +70°C