The Magnetic Reed Switch Sensor Module is an electronic sensor that detects the presence of a magnetic field using a reed switch. When a magnet approaches the sensor, the switch changes state, allowing the module to provide a digital signal for microcontrollers and electronic circuits.

Features

• Detects magnetic fields using a reed switch

• Adjustable sensitivity using the onboard potentiometer

• Digital signal output for easy interfacing

• Onboard indicator LEDs

• Compatible with Arduino and other microcontrollers

• Compact PCB design with a separate glass reed switch

• Suitable for contactless position and proximity detection

Specifications

Pin Configuration

The exact pin order and output functions can vary by module version. Check the PCB labels before connecting.

Applications

• Door and window opening detection

• Magnetic proximity sensing

• Position and limit detection

• Security alarm projects

• Arduino and DIY electronics

• Object presence detection

• Smart home automation

• Magnetic switch experiments

Advantages

• Simple magnetic detection without physical contact

• Easy to interface with microcontrollers

• Compact and lightweight design

• Adjustable response on compatible module versions

• Useful for automation and security projects

Package Includes

– 1 × Magnetic Reed Switch Sensor Module

Note

The sensing distance depends on the magnet’s strength, orientation, and the specific reed switch. The potentiometer may adjust the module’s signal threshold rather than the reed switch’s intrinsic sensitivity. Verify the pinout and voltage requirements before use.