M5Stack Hall Effect Unit (A3144E Hall Sensor)
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M5Stack Hall Effect Unit (A3144E Hall Sensor)
Description
The M5Stack Hall Effect Unit (A3144E Hall Sensor) is a compact Hall sensor module for detecting magnetic fields, proximity, position, and speed-related events. It integrates three A3144E Hall effect switches, with logic processing handled by a 74HC08D gate IC.
The M5Stack Hall Effect Unit (A3144E Hall Sensor) outputs a low-level signal when an S magnetic pole approaches the front side of the sensor or an N magnetic pole approaches the back side. The onboard red LED lights when the magnetic state is detected, making the unit useful for door magnetic alarms, magnetic proximity sensing, rotation detection, and other embedded projects.
Features
- Unipolar Hall switch sensing
- Three integrated A3144E Hall effect switches
- 74HC08D logic processing circuit
- Fast response speed and high sensitivity
- Low-level active digital output
- Red LED status indicator
- HY2.0-4P Grove interface
- Building block compatible mounting design
Specifications
| Hall Sensor | A3144E x 3 |
|---|---|
| Logic IC | 74HC08D |
| Status Indicator | Red LED |
| Output Level | Low-level active |
| Signal Interface | Digital output |
| Product Size | 32.0 x 24.0 x 8.0mm |
| Product Weight | 4.2g |
| Package Size | 138.0 x 93.0 x 9.0mm |
| Gross Weight | 10.0g |
Applications
- Door magnetic alarm systems
- Magnetic field proximity sensing
- Speed and rotation measurement
- Position detection in embedded devices
- Magnet-triggered interaction projects
Product List
- 1 x Unit Hall
- 1 x HY2.0-4P Grove connection cable (20cm)
- 1 x Magnet
Other Content
PinMap
| HY2.0-4P Wire | Function |
|---|---|
| Black | GND |
| Red | 5V |
| Yellow | NC |
| White | Digital Output |
Resources
FAQ
How does this Hall sensor unit trigger output?
It outputs a low-level signal when an S pole approaches the front side or an N pole approaches the back side of the sensor.
What can it be used for?
It is suitable for door magnetic alarms, magnetic proximity sensing, speed measurement, rotation detection, and position feedback projects.
Does the module include a status indicator?
Yes. The onboard red LED lights when the magnetic state is detected.
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Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.
2.1 Germany Domestic Shipping
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0.00 - €50.00 | €4.95 | 2-4 Business Days |
| Deutsche Post | Over €50.00 | Free | 2-4 Business Days |
|
DHL Paket (Faster Delivery) |
€0.00 - €50.00 | €6.95 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
€50.00 - €100.00 | €2.00 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
Over €100.00 | Free | 1-3 Business Days |
2.2 Selected EU Countries / Regions
Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| FedEx Regional Economy | €0.00 - €100.00 | €7.95 | 3-5 Business Days |
| FedEx Regional Economy | Over €100.00 | Free | 3-5 Business Days |
EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
2.3 United States
| Region | Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|---|
|
Continental U.S. (50 States) |
USPS Ground Advantage | €0.00 - €45.00 | €4.95 | 3-7 Business Days |
| USPS Ground Advantage | Over €45.00 | Free | 3-7 Business Days | |
| USPS Priority Mail | €0.00 - €45.00 | €16.95 | 1-4 Business Days | |
| USPS Priority Mail | Over €45.00 | €14.95 | 1-4 Business Days | |
|
Non-Continental U.S. (AK, HI, PR, etc.) |
USPS Ground Advantage | €0.00 - €60.00 | €6.95 | 5-9 Business Days |
| USPS Ground Advantage | Over €60.00 | Free | 5-9 Business Days |
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2.4 International Destinations Outside the EU
For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:
| Order Amount | Shipping Cost |
|---|---|
| €0.00 - €300.00 | €19.95 |
| Over €300.00 | Free |
For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.
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3.1 Munich Warehouse
For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.
3.2 Arlington Warehouse
For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.
3.3 Shenzhen Warehouse
For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
4. Inventory, Pre-orders & Split Shipments
- Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
- Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
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5. Customs, Taxes & Delivery Issues
5.1 Customs and Taxes
For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.
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6. VAT
For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.






