LM393 3144 Hall Sensor Module

The LM393 3144 Hall Sensor Module is a compact, high-precision magnetic detection sensor designed for microcontrollers like Arduino, Raspberry Pi, and STM32. Featuring the reliable 3144 Hall Effect switch alongside an LM393 voltage comparator IC, this module provides accurate digital switching based on magnetic field proximity.

It is an ideal choice for motor speed measurement, RPM counting, position detection, non-contact switches, and magnetic alarm systems.

Key Features:

• LM393 Comparator IC: Delivers clean digital signals with strong driving capability (over 15mA).

• Signal & Power Indicators: Built-in LEDs provide real-time visual feedback for power supply and digital trigger status.

• Adjustable Sensitivity: Features an onboard potentiometer for fine-tuning signal sensitivity.

• Direct Microcontroller Interface: Digital output pin directly connects to microcontrollers, relays, or buzzers.

• Mounting Hole: Includes a pre-drilled bolt hole for easy installation and secure mounting.

Technical Specifications:

• Main Chips: LM393 Comparator, 3144 Hall Effect Sensor

• Operating Voltage: 3.3V – 5V DC

• Board Dimensions: 2.7 cm × 1.4 cm

• Output Type: Digital Switch Output (0 and 1)

• Pinout (4-Wire Interface):

  • VCC: External 3.3V–5V Power

  • GND: External Ground

  • DO: Small Board Digital Output (Low Level when triggered by magnetic field)

  • AO: Analog Output (Real-time signal voltage output)