Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Brand | TELESKY |
| Model Number | 3144 Hall Effect Sensor |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switching Output |
| Sensing Element | Allegro A3144 Equivalent |
| Detection Object | Magnetic Fields (North/South Pole) |
| Indicator | Green LED Power, Red LED Signal |
| Mounting Hole Diameter | 3mm |
| PCB Dimensions | 32mm x 14mm |
| Application | Speed Measurement, Counting, Position Detection |
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect for RPM projects
Used this module to build a tachometer for my 3D printer fan. The response time is incredibly fast and the output is clean. Easy to wire up to an Arduino Uno.
Anonymous
Mar 24, 2026
Rating: 5/5
Exactly what I needed
Replaced a faulty sensor in my old bicycle speedometer setup. This TELESKY module fit perfectly and calibrated instantly. Very happy with the purchase.
Anonymous
Mar 19, 2026
Rating: 4/5
Good value, works as expected
The sensor detects magnets reliably. The only minor issue is that the mounting holes are slightly tight for M3 screws, but nothing a drill bit can't fix.
Anonymous
Mar 13, 2026
Rating: 4/5
Solid component for learning
Bought this for a university project on magnetic fields. Documentation could be better, but standard 3144 datasheets work perfectly with it.
Anonymous
Mar 12, 2026
Rating: 5/5
Great sensitivity
The detection range is surprisingly good. It picks up small neodymium magnets from about 1cm away. The LED indicators are very helpful for debugging.
Anonymous
Mar 08, 2026
Rating: 5/5
Reliable counting sensor
I am using this to count rotations on a motor shaft. It has been running for 48 hours straight without missing a pulse. Highly recommended for automation projects.
Q: What is the operating temperature range?
A: The module is designed to operate safely between -40°C and +85°C, making it suitable for most indoor and protected outdoor applications.
Q: Can this detect both North and South poles?
A: The standard A3144 chip usually responds to one specific pole (typically South). Please check the specific orientation marked on the chip or test with a magnet to confirm polarity sensitivity.
Q: Is there a potentiometer to adjust sensitivity?
A: No, this specific 3144 model does not have an adjustable potentiometer. The switching threshold is fixed by the internal hall effect IC design.
Q: What is the maximum current this sensor can switch?
A: The onboard comparator can typically handle up to 20mA. For driving higher loads like relays or motors, we recommend using a transistor or MOSFET driver circuit.
Q: Does this module output analog or digital signals?
A: This module outputs a digital signal (HIGH/LOW) based on the presence of a magnetic field. It is not an analog linear sensor.
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