All Products

SKU: AF-375

A magnetic reed switch encased in an ABS plastic shell, commonly used to detect when a door, window, or drawer is opened. The switch half contains a normally-open reed contact, and the other half is a magnet. When the magnet is within 13 mm (0.5"), the reed switch closes, completing the circuit. ...

SKU: SF-COM-13247

This is the Magnetic Door Switch Set, a small reed switch assembly specifically designed to alert you when doors, drawers, or any other aperture opens. These types of switches are primarily used in home security systems. One half of the assembly set on a window or door frame and the other attache...

SKU: DF-SEN0387

This magnetic switch consists of two parts: a reed switch sensor with cable and a magnet trigger in a plastic housing. When the magnet is brought within approximately 1 cm of the sensor, the reed switch closes, allowing you to detect position changes, door/window states, and proximity events. Th...

SKU: AF-5069

The Adafruit FunHouse Starter Kit gives you everything you need to build WiFi-connected home automation projects with no soldering required. Powered by an ESP32-S2 chip running CircuitPython or Arduino, the FunHouse board connects to your WiFi network and makes it easy to create internet-powered ...

SKU: AF-3606

The Mongoose OS Google IoT Core Pack is a complete starter kit for building IoT projects with Google Cloud, built around the Adafruit Feather HUZZAH32 (ESP32). Developed in collaboration with Google and Mongoose OS, this kit includes a pre-soldered ESP32 Feather board along with sensors, actuator...

SKU: DF-SEN0481

This magnetic switch (reed switch) consists of two magnetic reeds (usually composed of iron and nickel) sealed in a plastic case. The two magnetic reeds are overlapped but there is a small gap between them. When a suitable external magnetic field comes within 2cm, the two magnetic reeds will cont...

SKU: LB-LR0018

A compact reed switch module that closes its circuit when a magnetic field is present. Inside the glass envelope, a pair of ferromagnetic metal contacts come together when a magnet is brought close, and spring apart when the magnet is removed — providing a simple, contactless switching mechanism....

SKU: EF-EF04075

OCTOPUS Magnetic Switch is a kind of electric brick carrying magnetic switch and compatible with OCTOPUS series. It mainly consists of WBSF12 dry reed switch. WBSF12 is a dry reed tube with frequently open contact point. When magnet come close to a certain distance,switch within WBSF12 will cl...

SKU: SF-COM-10601

An insulated reed switch that closes when exposed to a magnetic field and opens when the field is removed. The encapsulated design is more durable than glass reed switches and can be easily populated on a PCB. Key Features Magnetic Activation – Non-contact switching via magnetic field 1 A Max...

SKU: SF-COM-09312

The US1881 is a latching Hall effect sensor in a TO-92 package. When exposed to a magnetic field above the operating threshold, the open-collector output latches LOW and stays there until a reversed magnetic field pulls it back HIGH. This makes it ideal for detecting the presence or rotation of m...

SKU: SF-SEN-23881 · MPN: SEN-23881

The SparkFun TMAG5273 Qwiic Mini Linear 3D Hall-Effect Sensor is a low-power, high-precision magnetic field sensor that can detect a magnetic field's presence, strength, and direction in three dimensions. This board is perfect for applications involving magnetic proximity detection, door and wind...

SKU: AF-2680

OK you've signed up for Adafruit.io and you're ready to build something cool and Internet-connected. All you need is this starter kit which will get you going with lots of parts that go very well with our service and are the most common sensors and actuators you may want. Sense light, motion, ...

SKU: SF-SEN-23880 · MPN: SEN-23880

The SparkFun TMAG5273 Linear 3D Hall-Effect Sensor is a low-power, high-precision magnetic field sensor that detects the presence, strength, and direction of magnetic fields in three dimensions. Built on a standard 25.4 × 25.4 mm (1 × 1 in) Qwiic breakout, it communicates over I²C with no solderi...

SKU: PL-1528

A compact SPDT snap-action switch (microswitch) with a 13.5mm lever arm. The satisfying tactile "click" provides clear feedback when activated, making it perfect for limit switches, bump sensors, and user interfaces. The three-pin SPDT configuration gives you access to both normally-open (NO) an...

SKU: SF-SEN-14709

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...

SKU: LB-LR0030

A simple analog Hall effect sensor module for detecting magnetic fields with Arduino. When a magnet is detected, the on-board LED turns on and the analog output changes proportionally to the field strength — making it easy to detect both the presence and relative proximity of a magnet. Key Featu...

SKU: DF-DFR0996

A Magnetic latching relay is a new type of relay.  It features low power dissipation and noiseless.  Unlike other non-latching relay, the latching relay needs two digital pulse signal to switch ON/OFF state. This DFRobot Gravity: magnetic latching relay is compatible with most...

SKU: SF-COM-08642

This is a small device called a reed switch. When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull together and the switch closes. When the magnetic field is removed, the reeds separate and the switch opens. This makes for a great non-contact switch. ...

SKU: M5-U058

The OP.180 is an infrared reflective limit switch unit built around the ITR9606 sensor, which pairs an infrared emitting diode with a silicon phototransistor in a 180° (straight-through) orientation. When an object passes between the emitter and receiver, the IR beam is broken, triggering a digit...

SKU: SF-DEV-13343

The LilyPad Reed Switch is a simple breakout for a reed switch that will make it easy to use in e-textiles circuits in exactly the same manner that you can currently use the LilyPad Button and Switch. In order to make it more durable for wearable use, we’ve used a different style of reed switch, ...