The SW-520D Angle Sensor Module for Arduino by Famephase Electronics Accessories is a compact and reliable tilt detection module designed for motion, orientation, and angle-sensing applications. It combines the SW-520D ball tilt sensor with an LM393 comparator to deliver a stable digital output whenever the module changes position. An onboard adjustable sensitivity potentiometer allows users to fine-tune the detection response according to their project requirements. With a simple 3-pin interface (VCC, GND, DO) and 3.3V–5V operating voltage, the module can be easily connected to Arduino, Raspberry Pi, and other microcontroller platforms. Built-in power and status indicator LEDs provide convenient visual feedback during testing and operation. Ideal for robotics, safety alarms, tilt-controlled systems, home automation, and DIY electronics projects, this module offers a simple and practical solution for reliable tilt detection.