Mini Dry Reed Pipe Module KY-021

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Dimensions	3 × 2 × 1 cm
Operating Voltage	3.3V to 5v
Output Type	Digital

Dimensions

3 × 2 × 1 cm

Operating Voltage

3.3V to 5v

Output Type

Digital

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 10kΩ resistor and a small reed switch actuated by a magnetic field, commonly used in mechanical systems as proximity sensors.