KY-025 magnetic reed-switch module with comparator

Check the module’s supply and output voltage against the controller’s input limits before connecting it. A 5V supply does not make the signal safe for a 3.3V GPIO or ADC; use suitable level/voltage conversion. Analogue signals require an ADC, which a standard Raspberry Pi computer does not include.

Make projects easier with this simple, reliable magnetic reed-switch module and its built-in comparator!

This module uses a magnetic contact called a reed switch. Two contacts touch when a magnetic field approaches them.

Use this reed switch module for contactless switching, such as detecting a closed door, or switching electronics through a waterproof barrier.

A built-in comparator simplifies integration into your project. The module offers the following:

• Analogue output lets a microcontroller read the sensor directly
  
• A built-in LM393 comparator automatically switches the digital output when the sensor level exceeds the threshold set with the potentiometer

For a version without a comparator, see its smallersibling here.

Technical specifications

What's included?

• KY-025 magnetic reed-switch module with comparator

Warranty and shipping

We do our best to test all electronics before sending them to you. 
This helps us deliver reliable products and saves you unnecessary trouble during development. Faults can occur, although we encounter them very rarely. If you have a problem with the equipment you ordered, you can always contact us, and we'll gladly help you resolve it. 

We dispatch from Aarhus to Denmark and Sweden. Shipping options and prices are shown at checkout. Delivery time depends on availability, destination and shipping method; contact us before ordering if you need an item by a specific date.