This DC 3V-5V rain and water level sensor module delivers precise liquid surface detection for Arduino-based projects. The analog output enables real-time depth and height measurements, making it ideal for environmental monitoring, aquarium systems, and automated irrigation applications. Compatible with Arduino UNO, MEGA, and similar microcontroller platforms, it integrates seamlessly into DIY electronics projects. The wide voltage range (3V-5V) ensures flexibility across various power supplies. Featuring a compact design with straightforward pin configuration, this sensor simplifies implementation while maintaining reliable performance in detecting rainfall, water accumulation, and liquid level changes.