SKU: SENS-2782
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Generic A3144 Hall Effect Magnetic Sensor Module - Digital Output

₹28.00 (Inclusive of all taxes)
Out of Stock

The A3144 Hall Effect Sensor Module is a digital switch that activates in the presence of a magnetic field, providing a clean TTL-compatible output signal for integration with microcontrollers like Arduino, Raspberry Pi, and ESP32.

Features

  • Digital Output Hall-Effect Sensor with TTL-Compatible Signal
  • Wide Operating Voltage Range, Typically 5V DC
  • Detects Both North and South Magnetic Poles
  • Fast Switching Time of 2 μsec for On/Off States
  • Robust Operating Temperature Range from -40°C to +85°C

Out of stock

Description

The A3144 is a bipolar Hall-effect switch integrated into a compact module. It operates on the principle of the Hall effect, where a voltage difference is generated across a conductor when a magnetic field is applied perpendicular to the current flow. This module conditions the raw sensor signal to provide a clean digital output, making it ideal for direct connection to digital input pins on microcontrollers and logic circuits.

When no magnetic field of sufficient strength is present, the module’s output signal line remains in a HIGH logic state (typically near the supply voltage). Upon detection of either pole of a magnet, the output switches to a LOW logic state, and an onboard LED illuminates for visual confirmation. This behavior makes it suitable for precise, non-contact switching applications in various environments.

Key Features

  • Digital Hall-Effect Switch with Bipolar Magnetic Detection
  • Onboard LED Provides Visual Status Indication
  • Integrated Reverse Polarity Protection for Safer Hookups
  • Low Current Consumption for Energy-Efficient Designs
  • Compact PCB Mounting Design with Standard 2.54mm Pin Spacing
  • High-Value Build Optimized for Reliability in Harsh Conditions

Applications

  • Non-Contact Position Sensing in Robotics and CNC Machines
  • RPM Measurement and Speed Detection using Rotating Magnets
  • Door/Window Open-Close Detection in Security and Alarm Systems
  • Proximity Switching and Limit Sensing in Industrial Automation
  • Magnetic Field Presence Verification in Consumer Electronics and DIY Projects

Technical Specifications

Operating VoltageTypically 5V DC
Output TypeDigital (TTL)
Output Current25 mA
Quiescent Current~8 mA (When Switched)
Switching Time2 μsec (On/Off)
Operating Temperature-40°C to +85°C
Magnetic DetectionBipolar (Both Poles)
Module Dimensions (LxW)20 mm x 16 mm
Module Weight2 g
Primary ColorBlack

Frequently Asked Questions

What is the operating voltage range for the A3144 module?

The module is designed for a typical operating voltage of 5V DC. It is crucial to stay within this specified range to ensure proper digital output logic levels and to prevent damage to the onboard components. Always verify your power supply matches this requirement before connecting.

How do I connect the A3144 sensor module to an Arduino?

Connect the module's VCC (middle pin) to Arduino's 5V pin, GND to GND, and the signal (S) output pin to any digital input pin (e.g., D2). The output is TTL-compatible: it reads HIGH (3.5V) with no magnet and switches LOW (0V) when a magnetic field is detected. The onboard LED will light up concurrently with the LOW state.

Can this sensor detect both north and south magnetic poles?

Yes, the A3144 is a bipolar Hall-effect switch, meaning it will activate and pull its output LOW in the presence of either a north or south magnetic pole of sufficient strength. It does not distinguish between poles; it only signals the presence or absence of a magnetic field exceeding its threshold.

What is the response time of the sensor?

The sensor features a very fast switching time of 2 microseconds (μs) for both turn-on and turn-off. This rapid response makes it suitable for high-speed applications such as RPM counting, speed sensing on rotating shafts, or any scenario requiring precise timing of magnetic events.

Package Includes

  • 1 x A3144 Hall Effect Sensor Module

Additional Information

Weight 0.002 kg
Dimensions 2 × 1.6 cm