BMT 49E Linear Hall Effect Magnetic Sensor Module 3.3-5V

The BMT 49E Hall Sensor Module is a compact magnetic field detection module designed for accurate sensing of magnetic strength and polarity. It is based on a linear Hall effect sensor (A3144/AH49E family depending on variant) and uses an onboard LM393 comparator to provide both analog and digital output options.

This module detects the presence and strength of a magnetic field and converts it into a corresponding electrical signal. The output voltage varies proportionally with magnetic field intensity, making it ideal for position detection, speed measurement, proximity sensing, and rotation counting applications.

With adjustable sensitivity via onboard potentiometer, users can fine-tune the trigger threshold for precise control. The module supports both 3.3V and 5V systems, making it compatible with Arduino, ESP32, Raspberry Pi, and other microcontroller platforms.

It is widely used in robotics, motor speed detection, door sensors, encoder systems, and automation projects.

Key Features:

• Linear Hall effect magnetic field detection
• Adjustable sensitivity threshold (LM393 comparator)
• Analog and digital output options
• Detects both North and South magnetic poles
• Compatible with 3.3V and 5V systems
• High sensitivity and stable performance
• Ideal for Arduino and embedded systems

Specifications:

• Sensor Type: Linear Hall Effect Sensor (AH49E/A3144 family)
• Operating Voltage: 3.3V - 5V DC
• Output Type: Analog + Digital (via comparator)
• Comparator IC: LM393
• Output Current: up to 10 mA
• Operating Temperature: -40 C to +100 C
• Detection: Magnetic field strength and polarity
• Adjustment: Onboard potentiometer for threshold tuning
• Mounting: PCB module with pin headers

What's in the box
1 x BMT 49E Linear Hall Effect Magnetic Sensor Module 3.3-5V