NPN LJ12A3-4-Z/BX Inductive Proximity Sensor

Name: NPN LJ12A3-4-Z/BX Inductive Proximity Sensor
Brand: Autonics
SKU: PEIPS45
Price: 500 KES
Availability: OutOfStock

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Description

Features:

CATEGORY	SPECIFICATIONS
Product Type	Inductive Proximity Sensor (Non-contact metal detection switch)
Model	LJ12A3-4-Z/BX
Sensor Type	Inductive high-frequency oscillation proximity sensor
Detection Method	Detects metallic objects via induced electromagnetic field
Detection Distance	4 mm
Detection Object	Metals (including aluminum foil); non-metals not detected
Operating Voltage	DC 6 – 36 V
Polarity / Output Type	NPN, Normally Open (NO)
Output Behavior	LOW signal when metal is detected (switch to ground)
Signal Voltage Level	Same as supply voltage (6–36 V output)
Output Protection Note	Requires voltage level shifting (e.g., 10 kΩ resistor for 5V systems)
Response Type	Instant switching, non-contact detection
Housing Type	M12 threaded cylindrical body
Physical Dimensions	~12 mm diameter × 50 mm length
Mounting	Includes nut for mechanical installation
Indicator	Built-in red LED (detection indicator)
Output Wiring	3-wire system (Brown = VCC, Blue = GND, Black = Output)
Key Features	High precision, stable detection, fast response, long service life
Environmental Resistance	Industrial durability, vibration-resistant
Application Example	3D printer bed leveling (Z-endstop), CNC machines, automation systems
Special Notes	Can detect aluminum foil (useful for glass bed setups)
Compatibility	Commonly used with Arduino, CNC firmware, 3D printer controllers