Product details of KY-021 Mini Reed Switch Module
- Description: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. Specifications: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 and ESP8266.Operating Voltage3.3V to 5vOutput TypeDigital
Connect the module’s Power line (middle) and ground (-) to +5 and GND respectively. Connect signal (S) to pin 2 on the Arduino.
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