Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switching (DO) |
| Sensor IC | A3144 Hall Effect |
| Operating Temperature | -40°C to 85°C |
| PCB Size | 32mm x 14mm x 4mm |
| Mounting Hole Diameter | 3mm |
| Power Indicator | Red LED |
| Signal Indicator | Green LED |
| Compatibility | Arduino, STM32, ESP32, Pi |
| Item Weight | 4.5 grams |
Anonymous
Mar 26, 2026
Rating: 5/5
Reliable switching
I use these for speed sensing on DC motors. They handle the voltage well and haven't failed yet.
Anonymous
Mar 21, 2026
Rating: 4/5
Good sensor, clear LED
Works well with my Arduino Uno. The indicator LEDs help with debugging. Only 4 stars because pins were slightly bent.
Anonymous
Feb 22, 2026
Rating: 5/5
Perfect for RPM measurement
Used this to count motor revolutions on my robotics project. Very stable output and easy to wire.
Anonymous
Feb 10, 2026
Rating: 4/5
Good for beginners
Easy to understand and use. Documentation could be better but there are plenty of tutorials online.
Anonymous
Jan 22, 2026
Rating: 5/5
Great value module
Exactly as described. Detects magnetic fields reliably. Fast shipping too.
Q: Is there an analog output pin available?
A: No, this specific 3144 module provides a digital switching output only.
Q: Can I use this for a water flow sensor project?
A: Yes, provided your flow meter utilizes a magnetic impeller mechanism.
Q: Does this module support 3.3V logic levels?
A: Yes, the module operates comfortably between 3.3V and 5V DC.
Q: Do you have sample code for ESP32?
A: Yes, please refer to the download link in the product description for ESP32 and Arduino examples.
Q: What is the maximum detection distance?
A: It depends on the magnet strength, but typically it detects within 1 to 2 centimeters.
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