Description
Magnetic Control Module Reed Switch Sensor
This module can be applied in Program-controlled switches, copiers, washing machines, refrigerators, cameras, Disinfection cabinets, doors, window magnetic, electromagnetic relays, electronic weighing, level meters, gas meters, water meters, and so on.
Reed Switch Module Comparison Chart
| Feature | Red KY-025 (3-Pin) | Blue Reed Switch (4-Pin) |
|---|---|---|
| PCB Color | Red | Blue |
| Pins | 3 | 4 |
| Operating Voltage | 3.3V–5V | 3.3V–5V |
| Digital Output | ✔ Yes | ✔ Yes |
| Analog Output | ✔ Yes | ✘ No |
| Comparator IC | LM393 | LM393 |
| Sensitivity Adjustment | ✔ Trimmer Potentiometer | ✔ Trimmer Potentiometer |
| Output Type | Analog + Digital | Digital Only |
| Status LED | ✔ Yes | ✔ Yes |
| Mounting Hole | ✔ Yes | ✔ Yes |
| Ideal For | Advanced sensing projects | Simple magnetic detection |
Key Features
- Detects magnetic field using reed switch technology.
- Available in Analog + Digital (Red) and Digital-only (Blue) versions.
- Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other MCUs.
- Built-in LM393 comparator for stable output.
- Adjustable sensitivity using onboard potentiometer.
- Operates from 3.3V to 5V.
- Fast response and low power consumption.
- Onboard power and status LEDs.
- Easy interface with microcontrollers.
- Mounting hole for convenient installation.
Technical Specifications
| Parameter | Red Module | Blue Module |
|---|---|---|
| Product Type | Reed Switch Sensor Module | Reed Switch Sensor Module |
| Sensor Type | Magnetic Reed Switch | Magnetic Reed Switch |
| Operating Voltage | 3.3V–5V DC | 3.3V–5V DC |
| Output | Analog + Digital | Digital Only |
| Comparator IC | LM393 | LM393 |
| Sensitivity Adjustment | Yes | Yes |
| Operating Current | <15mA | <15mA |
| PCB Size | 36 × 15 mm | 32 × 14 mm |
| Mounting Hole | Yes | Yes |
| Installation | Through-hole PCB | Through-hole PCB |
Applications
- Door and window security systems
- Magnetic proximity detection
- Position sensing
- Industrial automation
- Home automation
- Smart locks
- Electronic weighing equipment
- Water meters
- Gas meters
- Refrigerators
- Washing machines
- Cameras
- Electromagnetic relays
- Level monitoring systems
- Arduino learning projects
- Robotics
- IoT systems
Precautions
- Use within the specified operating voltage range (3.3V–5V).
- Do not expose the module to excessive moisture.
- Keep strong magnets away when not required.
- Adjust sensitivity carefully using the onboard potentiometer.
- Ensure correct wiring before powering the module.
- Avoid excessive mechanical stress on the reed switch.
- Disconnect power before installation or maintenance.
- Handle the glass reed switch carefully to avoid breakage.
Package Includes:
1 x Reed Switch Module