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M4 Inductive Proximity Sensor, 1mm Sensing, 3-Wire DC 6-36V (NPN/PNP NO/NC Options)

M4 Inductive Proximity Sensor, 1mm Sensing, 3-Wire DC 6-36V (NPN/PNP NO/NC Options)

$29.00 USD
$29.00 USD
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● Flexible Output: 3-Wire NPN/PNP (NO/NC) selectable.
● Status Indicator: Integrated Red LED for real-time diagnostics.
● Rugged Build: IP67-rated; resistant to oil, water, and shock.
● High Precision: Optimized for micro-positioning and limit sensing.
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Overview

Engineered for extreme precision in confined spaces, our M4 series proximity switch combines a sub-miniature form factor with industrial-grade reliability. With a shielded (flush) design, it delivers a stable 1mm sensing range specifically optimized for high-speed automated equipment.

Feature

  • Ultra-Compact M4 Housing: The 4mm threaded diameter allows for seamless integration into precision molds, robotic grippers, and micro-machinery where standard sensors won't fit.
  • Superior Interference Immunity: Shielded (flush) installation ensures zero mutual interference when sensors are mounted side-by-side, maintaining high accuracy in dense arrays.
  • Optimized for Magnetic Metals: Precision-tuned for a 1mm detection distance on steel and iron.Note: For non-magnetic metals like aluminum or copper, a standard reduction factor applies.
  • Industrial Resilience (IP67): Fully sealed construction provides complete protection against water, oil, and dust, ensuring a long operational lifespan in harsh environments.

Technical Applications

  • Precision Tooling: Ideal for mold closing detection and component positioning in CNC tools.
  • Electronics Assembly: Perfect for small-part presence sensing on SMT lines.
  • Robotics & Medical: Miniature feedback sensing for robotic joints and medical laboratory automation.
Technical Specifications
Installation Shielded (Flush)
Sensing Distance 1mm ± 10%
Setting Distance 0 – 0.7mm
Output Method 3-Wire DC (NPN/PNP NO/NC selectable)
Supply Voltage 12-24V DC (Wide range 6-36V DC)
Control Output Max 300mA
Response Frequency DC
Protection Class IP67
Housing Material Nickel-Plated Brass
Sensing Face Material ABS
Cable Length 1.2m
Loop Protection Reverse polarity, Surge absorption, Short-circuit protection

Product FAQ

What types of metal objects can this M4 proximity sensor detect? +
This inductive sensor is designed to detect all conductive metals.

Best Results: Optimized for magnetic metals like Iron and Steel (Standard 1mm sensing distance).

Other Metals: It can detect Aluminum, Brass, and Copper, but the effective sensing range will be reduced (approx. 40%-50% of the standard distance).

Pro Tip: For high-precision positioning, we recommend a setting distance within 0.7mm.
Should I choose NPN or PNP? (Important for 3-Wire Sensors)？ +
This depends on your PLC or controller's input logic:

NPN (Sinking): The sensor switches the negative (GND) side of the load. Common in Asian and North American control systems.

PNP (Sourcing): The sensor switches the positive (VCC) side of the load. Standard in European (IEC) industrial automation.

Please verify your controller's wiring diagram. You can select the specific NPN or PNP version from the product options.
How do I wire this 3-wire M4 sensor? +
Our sensors follow the standard industrial color code for easy installation:

Brown: Positive (+VCC, 6-36V DC)

Blue: Negative (GND/0V)

Black: Control Output (Signal)

Benefit: Unlike 2-wire sensors, this 3-wire design has a much lower leakage current and provides a more stable signal for high-speed counting and precision robotics.