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KNEA KNBT8-M18-NA and KNBT4-M12-NA are inductive proximity sensors designed for non-contact metal detection in industrial automation. Both models are actively supported and conform to EN 60947-5-2 standards.

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🔍 Product Overview: KNEA Inductive Proximity Sensors

KNBT8-M18-NA

Attribute	Specification
Sensor Type	Inductive proximity sensor
Housing Size	M18 cylindrical
Sensing Distance (Sn)	8 mm
Output Type	NPN, Normally Open (NO)
Operating Voltage	10–30 V DC
Rated Current	200 mA ±10%
Repeat Accuracy	≤ 5%
Hysteresis	~8%
Protection Class	IP67
Mounting	Flush mountable
Temperature Range	–25°C to +70°C

KNBT4-M12-NA

Attribute	Specification
Sensor Type	Inductive proximity sensor
Housing Size	M12 cylindrical
Sensing Distance (Sn)	4 mm
Output Type	NPN, Normally Open (NO)
Operating Voltage	10–30 V DC
Rated Current	200 mA ±10%
Repeat Accuracy	≤ 5%
Hysteresis	~8%
Protection Class	IP67
Mounting	Flush mountable
Temperature Range	–25°C to +70°C

Sources:

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✅ Application Notes

• Use Cases: Metal object detection, position sensing, end-of-travel feedback, and automation interlocks
• Target Material: Standard target is FE360 steel (24 mm × 24 mm × 1 mm for M18; 18 mm × 18 mm × 1 mm for M12)
• Signal Stability: Optical isolation and low off-state current (<0.1 mA) ensure reliable switching in noisy environments
• Installation Tip: Ensure proper alignment and avoid metallic interference for optimal sensing range

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