Description:
The KY-021 Mini Magnetic Reed Module is a simple module that is a magnetic sensor which is normally open and closes when exposed to a magnetic field.
The KY-021 Mini Magnetic Reed Module has a 10k Ohm resistor and a reed switch that is activated by a magnetic field, with the digital output pin going to HIGH (+5V). The module has an onboard LED which is activated when the module is in the closed state.
Specifications:
Operating voltage: 3.3V – 5V
Output type: Digital
Dimensions: 20mm x 15mm x 7mm
Pin Specifications:
Pin 1: Analogue out
Pin 2: GND
Pin 3: VCC (+5V)
Pin 4: Digital Out
Contents:
2 x Mini Magnetic Reed Module – KY-021