The Water Level Sensor is a compact and practical liquid-level detection module designed to monitor rising and falling water levels in a variety of automation and sensing applications. Its specially arranged parallel conductive traces detect changes in electrical conductivity as water reaches different sections of the sensing surface, converting physical liquid contact into a measurable analog signal. This simple yet effective sensing principle allows the module to provide real-time water-level information without requiring complex mechanical components. With its lightweight construction and easy-to-interface design, it can be readily integrated with Arduino, ESP32, Raspberry Pi, and other microcontroller platforms for water tank monitoring, overflow detection, rainwater sensing, sump-level indication, smart irrigation, aquarium projects, and home automation systems. Featured by Famephase Electronic Accessories.