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Reed switches are normally-open magnetic switches that close when a magnet is nearby—great for door/drawer sensors, rotation sensing, and simple on/off magnetic triggers.
Bare reed switches (for custom wiring)
- Reed Switch ($4.55) — basic glass-style reed switch for breadboards/prototyping.
- Reed Switch - Insulated ($7.50) — encapsulated/insulated for a more durable build than a bare glass reed.
Modules / breakouts (easier microcontroller hookup)
- Reed Switch Module ($4.35) — simple module with digital output (DO) style hookup.
- Standard mini Reed Switch Module ($7.80) — compact module form factor.
- LilyPad Reed Switch ($14.85) — designed for e-textiles/LilyPad sewing-style projects.
Door/window style magnetic contact sets (pre-housed)
- Magnetic contact switch (door sensor) ($5.05) — ABS housing with separate magnet piece; ideal for doors/windows/drawers.
- Magnetic Door Switch Set ($9.55) — reed switch assembly specifically aimed at door/drawer open detection.
- Magnetic Switch ($7.90) — housed sensor + magnet; triggers at roughly ~1 cm proximity.
Showing 21-40 of 48 products · 12 unavailable products hidden
Micro:bit Explorer's Kit
Note: This is the new version of our Micro:Bit 24 Bit kit and has been updated for the new Micro:Bit V2! The Little Bird Micro:bit Explorer's Kit includes more than 24 tutorials that teach you both how to use the micro:bit with various sensors and electronics with real-world applications. Acces...
Reed Switch Module
A reed switch is an electrical switch which is operated when a magnetic field is brought near to it. Check out our tutorial here Digital Output (DO)GND: In electronics, we define a point in a circuit to be a kind of zero volts or 0V reference point, on which to base all other voltage measu...
Micro:bit Explorer's Kit without Micro:bit v2
The Little Bird Micro:bit Explorer's Kit includes more than 24 tutorials that teach you both how to use the micro:bit with various sensors and electronics with real-world applications. Access to the tutorials are available on our website for free, forever! There is a speaker and microphone,...
Hall-Effect Sensor - AH1815 (Non-Latching)
The AH1815 is an integrated Hall-Effect non-latched sensor. That’s nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass encapsulation and size. A...
Red Snap Action Keyboard Switch - PCB Mount
PCB Mount, single pole, momentary. Suitable for keyboards, security systems, etc. 5 colours. - These switches are normally open SPST. When button is depressed the switch closes, but only while the button is down.- Contact rating 10mA/35V DC. Pin spacing 5mm Specifications Switch Type Tacti...
5-Position SMD D-Pad Directional Switch
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This compact 5-way directional pad gives your microcontroller project a familiar tactile input for up, down, left, right and centre presses.It is an SMD switch, making it suitable for custom PCBs where you need a low-profile navigation control or menu input without using multiple separate buttons...
8-Position SMD DIP Switch
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This compact surface-mount DIP switch provides 8 individual switch positions for adding simple, user-selectable controls to a PCB.Each position is an SPST slide switch, making it suitable for general control switching in embedded projects, configuration inputs, mode selection and similar low-curr...
SHT20 I2C Temperature Humidity Sensor (Waterproof Probe)
This SHT20 I2C temperature & humidity sensor is equipped with waterproof probe. It comes with the 4C CMOSens® SHT20 temperature & humidity sensor chip and the probe has gone through dual waterproof protection test. The SHT20 I2C temperature & humidity sensor adopt Sensirion techniqu...
Micro:bit Education Kit
Dive into the world of coding, electronics, and robotics with our comprehensive Micro:Bit Education Kit. Perfect for educators, students, and makers alike, this kit includes everything you need to explore and create innovative projects including lots of tutorials! What's Included: 1 x...
Buck-Boost DC/DC Converter 8-36V to 12V 6A
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When your system needs a stable 12V rail from a variable DC supply, this industrial-grade buck-boost converter is built to deliver. It accepts a wide 8 to 36VDC input range and regulates it to 12V for loads up to 6A, or 72W.The buck-boost design automatically switches between stepping voltage dow...
SPDT Mini Power Switch
Simple SPDT slide switch. Rated at 30V/200mA. The pins have .1" spacing - fits great into a breadboard! Use it as a power switch or general control switch.
37 in 1 Sensor Kit for Arduino
A comprehensive collection of 37 different sensors and modules for Arduino, covering a wide range of inputs and outputs for electronics projects. Everything comes neatly organised in a clear plastic storage case. From environmental sensing (temperature, humidity, light) to user input (joystick, ...
BMP388 Digital Pressure Sensor Module
The BMP388 Digital Pressure Sensor Module is a high-accuracy barometric pressure and temperature breakout based on the Bosch BMP388. It offers significantly improved performance over its predecessors (BMP180, BMP280) with lower power consumption, higher resolution, and faster sampling — making it...
Little Bird 45 in 1 sensor kit for Arduino
This kit brings together a wide range of sensor and interface modules for Arduino projects, experiments and classroom learning. It includes input sensors, output modules, switching modules, power modules and useful building blocks for trying common electronics ideas.Use the modules to explore lig...
SparkFun Navigation Switch Cover Set - SparkFun Electronics
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We really like the 5-way switch on the Qwiic Navigation Switch but its size makes it a little difficult to reach and use so we designed this set of five covers to remedy that. The SparkFun Navigation Switch Cover Set comes with five simple covers designed to fit snugly on top of our 5-way na...
Precision LM4040 Voltage Reference Breakout - 2.048V and 4.096V
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How good is your multimeter really? Or maybe your analog converter needs a good reference? Or lets say you want to test your microcontroller's conversion accuracy & precision. If only you had a dependable, high precision, rock-solid voltage reference. Now you know why we made this very cute...
Sensitive SW-520D Ball Switch
This is a ball tilt switch. When the switch is vertical the switch is ON. When put horizontal the switch is OFF. All materials are manufactured using environmentally friendly raw materials, in line with ROHS requirements. Here is our hook up guide and tutorial What is a Ti...
TOF Sense Laser Range Sensor (5m)
TOF Sense is a TOF-based (Time of Flight) laser ranging sensor that offers 1cm-5m detection range, 1mm resolution, ± 1.5cm error, and 10Hz data update frequency. The sensor supports 15 ° ~ 27 ° adjustable FOV, UART and CAN communication (selected by setting). Besides, it allows users to actively ...
MagnetoPot Linear Potentiometer 50mm - Male Pins
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This 50mm MagnetoPot provides potentiometric position feedback without needing a traditional external wiper or actuator. An outside magnet guides the built-in magnetic element, allowing the sensor to report position through a linear potentiometer output.The sealed membrane-style construction make...
DFRobot Gravity 10DOF IMU AHRS (BNO055 + BMP280)
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This compact Gravity module combines a Bosch BNO055 absolute orientation sensor with a BMP280 barometric pressure and temperature sensor to create a 10DOF AHRS module for motion, heading and environmental sensing.The BNO055 integrates a triaxial 14-bit accelerometer, triaxial 16-bit gyroscope, tr...
