Inductive Proximity Sensor Switch M12 Non Shield Type 4mm Sensing Range LJ12A3-4-Z/BX NPN Normally Open 3 Wire 10 30 VDC 200 mA Output Magnetic Metal Detection DIY Friendly Mount with Reverse Polarity and Short Circuit Protection

Inductive Proximity Sensor, M12, 4mm Sensing, IP67 1-Pack
✔️ 4mm sensing range, NPN NO, 3-wire, 10-30 VDC, IP67

This compact inductive proximity sensor detects magnetic metal targets without contact and is commonly used on automation lines, conveyors, robots, and PLC-controlled equipment.

✅ Sensing range: 4 mm ±10%
✅ Output: NPN normally open (NO), 3-wire
✅ Power: 10-30 VDC, up to 200 mA
✅ IP67 rugged metal housing, M12 mounting hole 12 mm
✅ Reverse polarity and short-circuit protection; PLC-compatible
✅ LED indicator shows sensor state

💡 What is an inductive proximity sensor used for in automation projects?

Handy for detecting metal objects without contact in industrial settings.

- Detect metal targets without touching them to trigger controllers
- Useful for end-of-travel, limit, and part detection on conveyors
- Works with 3-wire NPN outputs and 10-30 VDC supplies
- IP67-rated housing handles dusty, wet factory environments