A Mini Dry Reed Pipe Module KY-021 is a magnetic sensor that is normally open and gets closed when exposed to a magnetic field. The KY-021 Mini Dry Reed Pipe Module consists of a 10k? 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, etc...
Operating Voltage 3.3V to 5v
Output Type Digital