Name: 41F Bipolar Hall Effect Latch Sensor – TO-92, 3.5V–24V
Brand: NZN Electronics
SKU: 41F-HALL-TO92
Price: 0.78 NZD
Availability: InStock

41F Bipolar Hall Effect Latch Sensor – TO-92, 3.5V–24V

$0.78 NZD

41F Bipolar Hall Effect Latch Sensor – TO-92, 3.5V–24V

$0.78 NZD

Rated 4.9/5 by 20 NZN customers Verified

Shipping from $5.99 urban / $9.99 rural.

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The 41F-551 Hall Effect Sensor is a compact digital magnetic switch sensor in a TO-92 package designed for Arduino, ESP32, RPM sensing, wheel speed detection, magnetic proximity sensing, robotics, and automation projects.

Digital Hall Effect magnetic switch output
Compact TO-92 package
Wide 3V – 24V operating voltage
Fast switching response time
Low power consumption
Compatible with Arduino, ESP32 & Raspberry Pi
Breadboard-friendly pin spacing
Ideal for RPM & proximity sensing

Quick Wiring

Face the flat side toward you

The “41F 551” marked side should face toward you when identifying pins.

Connect VCC

Pin 1 → 3V–24V supply voltage.

Connect GND

Pin 2 → Ground.

Read digital output

Pin 3 → Digital input pin on your microcontroller.

Please note: The 41F-551 is a digital Hall switch sensor — output changes state when a magnetic field is detected.

Specifications

Model41F-551

Sensor TypeDigital Hall Effect Switch

PackageTO-92

Operating Voltage3V – 24V DC

Output TypeDigital Open Collector

Output StateLOW when magnet detected

Operating CurrentTypically 4mA

Response TimeFast switching response

Magnetic PolaritySouth Pole Trigger

Operating Temperature-40°C to +85°C

Lead Pitch1.27mm

Package Width4.1mm typical

Lead Length14mm+ typical

Please note: This sensor outputs a digital LOW signal when the correct magnetic pole is detected.

Getting Started

Insert into breadboard

The TO-92 package is breadboard compatible with standard 2.54mm spacing.

Connect power

Connect VCC and GND to your Arduino or ESP32.

Connect output pin

Connect OUT to a digital GPIO input.

Bring magnet close

The output switches LOW when the correct magnetic pole approaches the sensor.

Please note: Magnetic field strength, polarity, and distance affect switching performance.

Common Uses

Wheel RPM sensing

Motor speed detection

Door open/close detection

Magnetic proximity sensing

Arduino digital sensor projects

Robotics & automation systems

Please note: Hall sensors are commonly used as contactless switches for reliable long-life sensing.

Common Questions

Is this a digital or analog Hall sensor?

This is a digital Hall switch sensor with ON/OFF output behaviour.

Will this work with Arduino?

Yes. Connect the OUT pin to any digital GPIO pin and detect HIGH/LOW state changes.

What happens when a magnet is near?

The sensor output switches LOW when the correct magnetic pole approaches the sensor.

Does this work on a breadboard?

Yes. The TO-92 package is fully breadboard compatible.

Please note: Magnetic field strength, polarity, and distance affect switching performance.

Why buy from NZN

International prices. None of the international wait.

We're a small Kiwi-owned shop, and we stock the same boards and parts you'd usually order from overseas, for about the same price. The only real difference is they ship from Te Awamutu, so you get them in a few days instead of waiting weeks.

Run by Kiwis, here in Te Awamutu

We're NZ owned and operated, and every order is picked, packed and sent from our place in Te Awamutu, Waikato.

Get it in days, not weeks

Order before 8am and it ships the same day, otherwise within 24 hours guaranteed. No waiting three to six weeks for a parcel to crawl over from overseas.

Low prices are the goal

As a maker myself, I want New Zealand to have a genuine low-price local option for electronics, not overpriced shelves or a long wait on an international parcel.