Proximity Sensor M18 PNP NO/NC 8mm - Tube Type Detection Switch
Proximity Sensor M18 PNP NO + NC - 8mm Detection, Tube Type
This M18 tubular inductive proximity sensor is designed to detect metallic objects without physical contact. It offers both normally open (NO) and normally closed (NC) PNP outputs, making it adaptable for various control and automation tasks. The 8mm sensing range and rugged metal housing ensure reliable performance in industrial environments.
Key Specifications
| Specification | Value |
|---|---|
| Thread Size | M18 x 1 |
| Sensing Distance | 8mm (shielded) |
| Output Type | PNP, NO + NC |
| Supply Voltage | 10-30 VDC |
| Maximum Load Current | 200 mA |
| Housing Material | Nickel-plated brass |
What You Can Build With This
- Contactless limit switch for CNC machines
- Metal part counter on conveyor belts
- Liquid level sensing using metal floats
- RPM measurement for rotating shafts with metal targets
Compatibility
Works directly with 24V PLC inputs and industrial relay modules. For 5V microcontrollers like Arduino, use a level shifter or a 24V to 5V optocoupler interface. The PNP output sinks current to the positive rail, so pairing with PNP-compatible input modules is essential.
Wiring Notes
Standard wire colors: brown for +V, blue for GND, black for NO, white for NC. Ensure the load does not exceed 200mA. A flyback diode is recommended when driving inductive loads like relays. Avoid bending the cable sharply near the sensor body.
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 Uno?
Yes, but you need an external 24V power supply and a level converter since the sensor output is PNP 24V. A common approach is using an optocoupler module to shift the output to 5V logic.
What is the difference between NO and NC outputs?
NO (normally open) output switches on when metal is detected, while NC (normally closed) switches off. This sensor provides both signals simultaneously for flexible control logic.
Can it detect aluminum the same as steel?
No, the sensing distance is reduced for non-ferrous metals. For aluminum, expect about 4-5mm. The 8mm rating is for standard mild steel targets.
📦 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