8mm Proximity Sensor NPN NO – Inductive Switch for Automation
8mm Proximity Sensor – NPN NO Inductive Switch
The 8mm proximity switch sensor is an inductive sensor with NPN normally open output. It detects metal objects within an 8mm range without physical contact, making it ideal for position sensing in automation systems, CNC machines, and robotics. Its non-contact detection ensures long life and reliable switching in industrial environments.
Key Specifications
| Specification | Value |
|---|---|
| Sensor Type | Inductive |
| Sensing Distance | 8mm |
| Output Type | NPN Normally Open (NO) |
| Operating Voltage | 6-36V DC |
| Max Output Current | 200mA |
| Switching Frequency | 500 Hz |
| Housing Material | Nickel-plated brass |
| Thread Size | M18 |
What You Can Build With This
- Limit switch for 3D printers or CNC machines
- Object detection on conveyor belts
- Robot endstop for precision movement
- Industrial machine safety interlock
Compatibility
This sensor works with any microcontroller or PLC accepting NPN signals, including Arduino, Raspberry Pi, and ESP32. Its 6-36V operating range suits industrial power supplies, and the NPN output can directly interface with 5V or 3.3V logic using a pull-up resistor. Commonly paired with motor drivers and relay modules for automated control.
Wiring Notes
Connect brown wire to positive supply (6-36V DC), blue to ground, and black to the signal input. For microcontroller use, add a 10kΩ pull-up resistor from the black wire to VCC to ensure a clean high signal; the output sinks to ground when a metal object is detected.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, wire the sensor to an external 12V supply (brown to 12V, blue to GND), and connect the black signal wire to an Arduino digital pin via a 10kΩ pull-up resistor to Arduino’s 5V pin. The output will be HIGH when no metal is detected and LOW when triggered.
What is the maximum switching speed?
The sensor has a switching frequency of up to 500 Hz, enabling 500 detections per second. It is suitable for most automation tasks but not for high-speed counting applications beyond this rate.
Can it detect plastic or wood?
No, this inductive sensor only detects metal objects. For non-metallic materials, a capacitive proximity sensor is required.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items