Reed Sensor Module (MagSwitch)

Reference: #202

R 18.71 In Stock (2)

Reed is dry reed short, is a kind of passive electronic switch contact element has a simple structure, small size and easy to control. The shell is in a sealed glass tubes in which there are two flexible iron reed panels, also called metal rhodium has a filling of inert gas. Normally, two glass tubes made of special materials reeds are separated. When a magnetic substance near the glass tube, under the action of magnetic field lines, the two reed pipe is magnetized and attract each other contacts, the reed will pull together to make a circuit of the connected node communication. After the disappearance of the external magnetic force, two reeds separately because of their elasticity, the line also disconnected. Therefore, as a signal to control the use of magnetic field lines switching devices, the reed can be used as a sensor for counting, spacing, and so on (in the security system is mainly used for door sensor, window magnetic production), but also It is widely used in a variety of communication devices. In practice, usually with a permanent magnet control the two metal sheets turned on or not, it is also known as "magnetron."

1.Normally Open reed

2.Driving capability of 15mA.

3.The working voltage of 3.3V-5V

4.The output form: digital switching output (0 and 1)

6.PCB board size: 3.2cm x 1.4cm

Reed Switch Module Tutorial: Magnetic Detection, Contact Behavior, and Arduino Usage
This tutorial is a comprehensive, practical guide to the Reed Switch Magnetic Sensor Module (Leobot Product #202). It explains how reed switches work internally, how this module presents the signal electrically, how to wire and debounce it correctly, and how to use it reliably for position sensing, door/window detection, rotation counting, and limit-switch applications.
Reed Sensor Module (MagSwitch) Tutorial: How Reed Switches Work, NO/NC Behavior, Arduino/ESP32 Wiring, Debounce, Door/Window Alarms, RPM Sensing, and Reliable Magnet Placement</h1>
This tutorial is a detailed, practical guide to using the Reed Sensor Module (MagSwitch) (Leobot Product #202) for magnetic detection: door/window state sensing, limit switches, proximity triggers, and simple RPM/tachometer inputs. You’ll learn what a reed switch actually is (a tiny sealed glass switch), how the module is typically wired (digital output + indicator LED), how to read it reliably on Arduino/ESP32 (including debounce and noise filtering), and how to mount magnets correctly so you get a stable, repeatable trigger every time.