Description
KY-021 is a magnetic reed switch 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.
- KY-021
- Voltage : 3v to 5v
- Size : 19mm x 16mm x 7mm
