Sensor-Arduino Mini Reed
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The KY-021 Magnetic Reed Switch module is a compact, normally open switch that outputs a digital signal when exposed to a magnetic field. Ideal for proximity sensing in mechanical systems, it works seamlessly with microcontrollers like Arduino, ESP32, and Raspberry Pi. Its small footprint and low power consumption make it perfect for DIY electronics and automation projects.
add_circle The Upside
- check Simple digital interface easy to integrate
- check Low cost and widely available
- check Versatile for various proximity sensing applications
remove_circle The Downside
- close Limited to on/off detection, no analog output
- close Requires external magnet to operate
- close Not suitable for high-speed switching
Specifications & features
Key features
- check_circle Digital output when magnetic field detected
- check_circle Normally open configuration
- check_circle Operating voltage 3.3V to 5V
- check_circle Compatible with Arduino, ESP32, Raspberry Pi
- check_circle Compact board size 18.5mm x 15mm
Specifications
Board Size
18.5mm x 15mm
Configuration
Normally Open
Operating Voltage
3.3V ~ 5V
Output Type
Digital
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