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M12 Inductive Proximity Sensor, 4mm Detection, NPN NO, Unshielded, DC 6-36V Metal Sensing Switch

M12 Inductive Proximity Sensor, 4mm Detection, NPN NO, Unshielded, DC 6-36V Metal Sensing Switch

$39.00 USD
$39.00 USD
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● M12x1 thread
● NPN NO output method
● Unshielded mounting type
● DC 12-24V (6-36V) supply voltage
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Overview

This industrial-grade M12 proximity switch is engineered for reliable non-contact metal detection in demanding automation environments. Featuring a 4mm sensing distance and a wide DC 6-36V operating voltage, it ensures seamless integration with most PLC systems. The unshielded (non-flush) design maximizes sensitivity, specifically optimized for magnetic metals while providing consistent performance for non-magnetic targets. Compact, durable, and built for high-speed positioning accuracy.

Feature

Precision Sensing Intelligence: Integrated with a high-speed smart chip, the sensor delivers rapid response times and exceptional anti-interference capabilities, ensuring pinpoint detection of metallic targets even in electrically noisy environments.

High-Frequency Stability: Designed for demanding automation, it features superior repeat positioning accuracy and a high switching frequency (up to 500Hz), supporting seamless, high-speed machine cycles.

Instant Visual Feedback: The high-luminance Red LED indicator provides real-time status monitoring. The clear On/Off feedback simplifies on-site debugging and significantly reduces maintenance downtime.

Industrial-Grade Durability: With an IP67 rating, this M18/M12 sensor is fully resistant to vibration, dust, water, and oil. It thrives where traditional mechanical limit switches fail, offering a maintenance-free, long-life alternative.

Advanced Circuit Protection: Engineered for direct PLC integration, the sensor includes built-in reverse polarity and short-circuit protection, ensuring the safety of your control system across a wide voltage range (DC 6-36V).

Technical Specifications
Installation Unshielded (Non-flush)
Detection Range 4mm ±10%
Setting Distance 0 – 3.2mm (Estimated based on 80% of range)
Detection Object Magnetic metal (Sensing distance decreases with non-magnetic metal)
Standard Target Iron 15×15×1mm
Response Frequency DC
Supply Voltage DC 12-24V (Operating range
Control Output ≤ 300mA
Current Consumption ≤ 13mA
Loop Protection Reversal connection, surge absorption, load short-circuit protection
Ambient Temperature -30°C to +65°C (Non-freezing)
Ambient Humidity 35–95% RH
Insulation Impedance ≥50MΩ (DC500 megameter)
Housing Material Nickel-plated brass
Detection Surface ABS
Protection Class IP67
Cable Length 1.2m

Product FAQ

What is the difference between "Unshielded" and "Shielded" sensors? +
Unshielded (non-flush) sensors feature a sensing face that extends slightly beyond the metal housing, allowing for a longer detection range compared to shielded types. However, they require a specific "metal-free" clearance zone around the sensor head to prevent false triggering from the mounting surface. Choose unshielded when maximum sensing distance is your priority.
What factors affect the actual sensing distance of this M12 sensor? +
While this M12 model provides a nominal sensing distance of 4mm for standard steel targets, the actual performance varies based on the target’s material, size, and thickness. For example, non-ferrous metals like aluminum or copper typically reduce the sensing range by 30-60%. Always ensure the target size is at least equal to the sensor's diameter for optimal accuracy.
Which industrial applications are M12 unshielded sensors best suited for? +
M12 unshielded sensors are the industry standard for high-speed position detection and metal presence sensing where a larger safety gap is required. They are ideal for conveyor systems, CNC limit switching, automated packaging lines, and any machinery where the sensor cannot be mounted flush with the metal frame. Their robust design ensures stable switching even in vibration-heavy environments.