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
MAKE iT WORK Basic Instruction Kit
Check MAKE iT WORK - KY-021 Mini Reed Switch Module for basic instruction.