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Home / Computer Hardware, Monitors & Peripherals / Keyes Hall Switch Magnetic Sensor A3144 Speed Counting Module Compatible with Arduino micro:bit
Computer Hardware, Monitors & Peripherals

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 3.3V to 5V DC
Output Signal Digital Low/High
Sensor Model A3144 Hall Effect
Interface 3-Pin Header
PCB Length 32 mm
PCB Width 14 mm
Mounting Hole 3 mm Diameter
Work Temperature -40 to 85 Celsius
Product Weight 2.5 grams
Compatibility Arduino, micro:bit, Pi

5 reviews

A

Anonymous

Apr 13, 2026

Rating: 5/5

Easy to Use

Clear labeling on PCB. Perfect for beginners.

A

Anonymous

Apr 04, 2026

Rating: 4/5

Good value

Works well but pins are a bit tight for breadboard.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Precise Switching

No bounce issues detected. Very clean signal output.

A

Anonymous

Feb 23, 2026

Rating: 5/5

Fast Shipping

Module arrived well packaged. Tested and working immediately.

A

Anonymous

Jan 19, 2026

Rating: 5/5

Great for robotics

Used it for wheel encoding. Works flawlessly with Arduino Uno.

5 FAQ

Q: What magnet strength is needed?

A: Standard neodymium magnets work best.

Q: Is there a status LED?

A: Yes a power LED indicates active status.

Q: Is the output pull-up enabled?

A: Yes the board has built-in pull-up resistor.

Q: Does it work with 3.3V logic?

A: Yes it supports 3.3V to 5V operation.

Q: Can it detect motor speed?

A: Yes it is suitable for RPM measurement.

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