The INVENTO 10Pcs Digital Magnetic Reed Switch Sensor (SPST 2-Pins NO) is a reliable and simple magnetic proximity sensor ideal for a wide range of DIY electronics, robotics, and automation applications. Each sensor uses a small sealed reed switch that closes (conducts) when exposed to a magnetic field — providing a digital contact closure signal that is easy to interface with microcontrollers and logic circuits.

This unit features a Normally Open (NO) SPST configuration with two pins for straightforward wiring. When a magnet approaches the sensor from the specified direction, the internal contacts close, pulling the output signal to logic LOW or HIGH depending on your circuit design. Removing the magnet returns the switch to its open state.

The sensors are compatible with typical 3V to 24V DC systems, making them suitable for microcontroller boards like Arduino, Raspberry Pi (via GPIO with pull-ups), AVR, PIC, ARM, and 8051 platforms as well as standard logic circuits. Installation is flexible — they can be mounted on PCBs, in enclosures, or panel-mounted using simple mechanical fixtures.

Common uses include door and window state sensing (open/close detection), proximity triggers, position detection for moving parts, security systems, robotics, mechanical limit switches, and numerous DIY automation scenarios. Compared to active sensors, magnetic reed switches are extremely low-power, have a long service life, and are immune to dust and dirt because the switching element is hermetically sealed.

With 10 pieces in a pack, this set gives you plenty of sensors to build multiple detection points, lab experiments, or prototypes without constantly reordering components. Whether you’re building a smart security alarm, robot limit switch array, or mechanical position detector, the INVENTO magnetic reed sensors offer a clean, effective, and cost-efficient solution.