The BMT Magnetic Reed Switch Sensor Module is a compact and reliable magnetic field detection switch designed for simple and effective position sensing applications. Built around a sealed reed contact mechanism, the module operates as a passive electronic switch that responds to the presence of a magnetic field.
When a magnet comes within approximately 1.5 cm of the sensor, the internal reed contacts are activated by magnetic induction, closing the circuit and triggering a digital LOW output. Once the magnetic field is removed, the contacts open again, returning the output to HIGH. This simple on/off switching behavior makes it ideal for security systems, door and window sensors, counters, and position detection in automation projects.
With its small form factor and easy mounting design, the module is widely used in DIY electronics, smart security systems, and industrial monitoring applications where reliable non-contact switching is required.
Feature(s)
Passive magnetic reed switch design
Detects magnetic field presence within ~1.5 cm
Digital output signal (0 and 1 switching)
Compact and lightweight construction
Easy installation with fixed mounting hole
Ideal for door/window security and position sensing
Low power operation (3.3V-5V systems)
Specifications
Operating Voltage: 3.3V - 5V
Detection Type: Magnetic field activation
Working Distance: Up to 1.5 cm
Output Type: Digital switching (HIGH / LOW)
Sensor Type: Reed switch (sealed glass tube contact)
Size: 3.2 cm x 1.9 cm x 0.7 cm
Net Weight: 4 g
Mounting: Fixed bolt hole for installation
Additional Information
Upgrade your security and sensing projects with the BMT Magnetic Reed Switch Module. Designed for simplicity and reliability, it provides accurate magnetic detection for doors, windows, counters, and automation systems. Its durable design and easy integration make it a dependable choice for both hobbyist and professional electronics applications.
What's in the box
1 x BMT Magnetic Reed Switch Sensor Module (3.3V-5V)
