A
Anonymous
Mar 29, 2026
Rating: 5/5
Great for speed counting
Used this to count motor RPM. Stable readings and fast response time.
Description
A3144E Hall Effect Sensor Module 44E Unipolar Electronic Magnetic Induction Switch Board KY-003
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch Output |
| Sensor Chip | A3144E Hall Effect |
| Working Current | 15mA - 20mA |
| Output Current | 25mA Maximum |
| Operating Temperature | -40°C to 85°C |
| PCB Dimensions | 3cm x 1.5cm x 0.3cm |
| Interface | 3-Pin Header (VCC, GND, OUT) |
| Indicators | Red Power & Green Output LED |
| Package Content | 1 x Hall Effect Sensor Module |
5 reviews
A
Anonymous
Mar 27, 2026
Rating: 5/5
Works perfectly with Uno
Very sensitive and easy to wire up. The LEDs make debugging simple.
A
Anonymous
Mar 14, 2026
Rating: 4/5
Good module
Works well but make sure you use a pull-up resistor if needed.
A
Anonymous
Mar 01, 2026
Rating: 5/5
Excellent value
Bought multiple for a class project. All units functioned correctly.
A
Anonymous
Feb 25, 2026
Rating: 5/5
Compact and reliable
Small footprint fits nicely in my enclosure. Detection range is adequate.
5 FAQ
Q: Can I use this with 3.3V logic?
A: Yes, it operates comfortably between 3.3V and 5V DC.
Q: Is the output analog or digital?
A: This module provides a digital TTL output signal.
Q: What is the detection distance?
A: It depends on magnet strength, typically 1-2cm for standard magnets.
Q: Does it come with headers soldered?
A: Usually shipped with pins included but unsoldered for flexibility.
Q: Is it sensitive to both magnetic poles?
A: The A3144 is unipolar, typically responding to one magnetic pole.
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