KY-021 MAGNETIC REED SWITCH SENSOR

KY-021 Magnetic Reed Switch Module emerges as a reliable and versatile ally. This compact and easy-to-use tool empowers your creations to sense the proximity of magnetic fields, unlocking a diverse range of applications from simple on/off switches to complex automated systems. This article delves into its technical intricacies, equipping you to harness its potential and bring your projects to life with the captivating magic of magnetic sensing.

Key Features of KY-021 Magnetic Reed Switch:

• • Magnetic Field Detection: Utilizing a pair of sensitive reed switches activated by magnets, the KY-021 accurately detects the presence or absence of a nearby magnetic field.
  • Digital Output: Providing a clean and straightforward digital signal upon the presence or absence of a magnet, the module seamlessly integrates with microcontrollers and logic circuits, simplifying code implementation and project layout.
  • Compact and Efficient: Characterized by a small and lightweight design, the KY-021 easily fits into space-constrained projects without compromising detection capabilities.

Technical Specifications of KY-021 Magnetic Reed Switch:

• • Sensor Type: Reed Switch
  • Operating Voltage: 3.3V to 5V DC
  • Output Type: Digital (High/Low)
  • Activation Distance: Typically within 10mm (depending on magnet strength)
  • Contact Resistance: 100mΩ max (initial)

Mechanical Specifications of KY-021 Magnetic Reed Switch:

• • Dimensions: 22mm x 15mm x 7mm
  • M2.5 Mounting Holes

Applications of KY-021 Magnetic Reed Switch:

• • Simple Security and Alarm Systems: Build doorbells, window alarms, and burglar alarms triggered by the opening or closing of doors or windows equipped with magnets.
  • Interactive Games and Toys: Design games and toys where objects control actions, characters, and settings through magnetic interaction.
  • Robotics and Automation: Implement proximity sensors for robots to avoid obstacles, navigate paths marked by magnets, and interact with magnetically tagged objects.
  • Industrial Automation and Machinery: Integrate KY-021 into machines and production lines to detect the presence of parts, activate safety measures, and trigger automated processes.
  • DIY Project Powerhouse: From building magnetically activated switches and counters to crafting interactive displays and scientific exploration tools.

Equivalent of KY-021 Magnetic Reed Switch:

• • While the KY-021 shines in many applications, alternative proximity sensor modules like the MPR121, TTP223B, and VL6180X offer options for specific needs, such as longer detection range, touch sensing, or gesture recognition. Consider your project requirements, desired sensing capabilities, and budget when choosing the best fit.

Package Includes:

• • 1 x KY-021 Magnetic Reed Switch Module Kit