A
Anonymous
Apr 15, 2026
Rating: 5/5
Perfect for Arduino Projects
Works flawlessly with my Arduino Uno. Detected magnets instantly.
Description
A3144E Hall 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 to 5V DC |
| Output Type | Digital Switch Output |
| Sensor Chip | A3144E Hall Effect IC |
| Operating Temperature | -40°C to 85°C |
| PCB Dimensions | 32mm x 14mm x 4mm |
| Pin Configuration | 3-Pin Header (VCC, GND, OUT) |
| Compatibility | Arduino, Raspberry Pi, STM32 |
| Standby Current | Approx. 15mA |
| Response Time | Microsecond Range |
| Package Weight | 5 grams |
5 reviews
A
Anonymous
Apr 04, 2026
Rating: 5/5
Great Sensitivity
Very responsive. The LED indicator is helpful for debugging.
A
Anonymous
Mar 26, 2026
Rating: 4/5
Good Value
Works well, though the pins were slightly bent on arrival. Easy to fix.
A
Anonymous
Feb 13, 2026
Rating: 5/5
Reliable Switch
Using it for a speedometer project. Consistent readings.
A
Anonymous
Feb 03, 2026
Rating: 5/5
Easy to Wire
Simple 3-pin connection. Got it working in minutes.
5 FAQ
Q: Is there a library for this?
A: It acts as a digital switch, so no specific library is needed, just digitalRead.
Q: What voltage does this run on?
A: It operates comfortably between 3.3V and 5V DC.
Q: What kind of magnet is needed?
A: A standard permanent magnet works well. Stronger magnets increase range.
Q: Can I use this with 3.3V logic?
A: Yes, it is compatible with 3.3V systems like Raspberry Pi.
Q: Is this unipolar or bipolar?
A: This module uses the A3144E which is a unipolar switch.
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