LM393 A3144 Hall Effect Sensor Module

A digital hall effect sensor module combining the A3144 hall sensor with an LM393 comparator for reliable magnetic field detection. Outputs a clean digital HIGH/LOW signal when a magnetic field is detected — ideal for speed sensing, RPM counting, and pulse-based detection projects.

Features

• Digital output only (TTL-compatible)
• Adjustable sensitivity via onboard potentiometer
• Onboard LED indicator for signal state
• Simple 3-pin interface (VCC, GND, OUT)

Applications

• RPM/tachometer sensing (shaft revolution counting)
• Speed detection for motors, wheels, fans
• Pulse counting and rotation sensing
• General digital magnetic field detection

What's in the box?

1 x Hall Effect Speed Measuring Sensor Module
 

Resources

• Availability: Out of Stock
  
• Model: LM393 Hall Effect Sensor
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