P-021: Mini magnetic Reed module

AED 8.00 Without VAT

Arduino magnetic reed switch module Keyes KY-021. A reed switch is a magnetic sensor that is normally open and gets closed when exposed to a magnetic field.


The KY-021 Mini Magnetic Reed Switch Module consists of a 10kΩ resistor and a small reed switch actuated by a magnetic field, commonly used in mechanical systems as proximity sensors. Compatible with popular electronic platforms like Arduino, Teensy, Raspberry Pi and ESP8266.

Operating Voltage 3.3V to 5v
Output Type Digital