Magnetic Reed Switch Module – High-Sensitivity Magnetic Field Detection Sensor

Product Description

Add magnetic proximity sensing to your smart home or robotics projects with the Magnetic Reed Switch Module. This module uses a high-quality glass reed switch that closes in the presence of a magnetic field. At Robogears, we recommend this module for security applications like door and window sensors, as well as non-contact limit switching in CNC machines or robots. Unlike a raw reed switch, this module includes an LM393 comparator circuit, providing a clean, de-bounced digital signal and a built-in potentiometer to adjust sensitivity. Whether you are building an intruder alarm or a rotation counter for your Pimpri workshop, this 5V-compatible module offers a "plug-and-play" solution for magnetic detection.

Detailed Key Features

• Non-Contact Magnetic Sensing: Detects the presence of a magnet through plastic, wood, or glass, making it ideal for hidden security triggers.

• On-board Signal Conditioning: The LM393 chip converts the mechanical switch's "bounce" into a sharp, stable digital square wave for your microcontroller.

• Adjustable Sensitivity: A multi-turn potentiometer allows you to fine-tune the magnetic threshold, helping to eliminate false triggers from nearby interference.

• Dual Status LEDs: Features a Red Power LED and a Green Signal LED that lights up the moment a magnetic field is detected.

• Easy Mounting Layout: Designed with a pre-drilled M3 mounting hole, allowing you to secure it firmly to door frames or moving robotic parts.

All Technical Details

• Pin Definition:

  • VCC: Positive Power (3.3V - 5V).

  • GND: Common Ground.

  • DO: Digital Output (High when no magnet, Low when magnet is present).

• Durability: The hermetically sealed glass tube protects the contacts from dust and oxidation, ensuring a long operational life.

• Applications: Alarm systems, liquid level sensors (with a magnetic float), speedometers, and cabinet lighting triggers.