Switch Module | G123-08 with LM393 Comparator | For Arduino DIY Kits

This LM393 reed sensor module detects magnetic fields. It combines a reed switch with a comparator. This gives you a clear digital signal when a magnet is nearby. It's easy to use with Arduino and other microcontrollers. Features and Benefits - Onboard LM393 Comparator - It puts out a steady, clean digital signal. This removes the signal noise you'd get from just a switch. - Adjustable Sensitivity - A small knob lets you change how far away it detects a magnet. You can set it for your project. - Digital and Analog Outputs - Use the digital pin for simple on/off detection. Or use the analog pin to see how close the magnet is. - Pre-drilled Mounting Hole - A 3mm hole makes it simple to attach the module. You can put it in an enclosure or on a project frame. Applications - DIY Door and Window Alarms - It makes a simple magnetic contact switch for home security projects. - Robotic Position Sensing - It tells you when a robot arm or moving part has reached its home or target spot. - Interactive Projects - Build displays or models where magnets trigger lights, sounds, or other actions. What It Is This is a Switch Module, model G123-08, featuring an LM393 Comparator. It is designed for use with Arduino DIY Kits. It operates on a voltage range of 3.3V to 5V and provides a digital output. The module incorporates a reed sensor, a type of proximity sensor that detects the presence of a magnetic field. It can switch voltages up to 30V and handle a maximum switching current of 100mA. This compact electronics module is supplied in quantities of 1 to 5 pieces. Key Uses & Applications This Switch Module is primarily used in Arduino DIY Kits for various switching and detection tasks. As a proximity sensor, it can be employed to detect the presence or absence of objects that generate a magnetic field. Typical applications include basic limit switching, position sensing in small mechanisms, and simple security systems where a magnetic field change triggers an event. Its digital output makes integration straightforward for on/off control. The low operating voltage range of 3.3V-5V makes it suitable for common microcontroller projects. How to Choose When selecting a switch module, consider the operating voltage, which for this module is 3.3V-5V. Ensure your project's power supply matches this requirement. The maximum switching voltage of 30V and switching current of 100mA are critical for connecting external loads; do not exceed these limits. This module is specifically compatible with Arduino DIY Kits. To test a proximity sensor like this, apply the specified operating voltage and introduce a magnetic field to the reed sensor. The digital output should change state, indicating detection. Consider the number of pieces required for your project.