A
Anonymous
Apr 10, 2026
Rating: 5/5
Plug and play
Connected directly to my Arduino Uno. Code was simple to write. Highly recommend.
Description
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Sensor Chip | A3144 Hall Effect |
| Operating Voltage | 5V DC (4.5V-24V Range) |
| Output Type | Digital Open Collector |
| Operating Temperature | -40°C to 85°C |
| Pin Count | 3 Pins (VCC, GND, OUT) |
| PCB Dimensions | 32mm x 14mm x 4mm |
| Sensing Distance | Approx. 5mm (varies by magnet) |
| Max Output Current | 25mA |
| Response Time | 4 Microseconds |
| Compatibility | Arduino, Raspberry Pi, PLC |
5 reviews
A
Anonymous
Mar 27, 2026
Rating: 3/5
Sensitive to noise
Had to add a capacitor to smooth out the signal in my high interference environment.
A
Anonymous
Mar 04, 2026
Rating: 4/5
Good value
Works well. Just remember you might need a pull-up resistor depending on your MCU.
A
Anonymous
Jan 25, 2026
Rating: 5/5
Great for RPM projects
Used this to measure fan speed. Very reliable signal and the LED helps visualize triggers.
A
Anonymous
Jan 20, 2026
Rating: 5/5
Solid component
Bought 10 for production. All tested working. Fast shipping too.
5 FAQ
Q: Can I use this for water flow measurement?
A: Yes, it is commonly used with magnetic flow meter impellers to count rotations.
Q: Does this module work with 3.3V logic?
A: Yes, the output is open collector so it can be pulled up to 3.3V, but power supply should be at least 4.5V.
Q: Is a magnet included in the package?
A: No, this listing is for the sensor module only. You will need to provide your own magnet.
Q: What is the pinout order?
A: When facing the component side, pins are usually VCC, GND, and OUT. Please verify with your multimeter.
Q: What polarity magnet triggers the sensor?
A: Typically the South pole of the magnet will trigger the output low on this unipolar switch.
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