The Waveshare Liquid Level Sensor (Model 9525) offers precise analog detection of liquid levels up to 48mm in depth. Utilizing triode current amplification, it provides a linear voltage output proportional to the immersion depth, making it ideal for monitoring water levels in tanks and reservoirs. Operating within a 2.0V to 5.0V power range, it is compatible with various microcontrollers and development boards. Its compact dimensions (19.0mm x 63.0mm) and mounting holes (2.0mm diameter) facilitate easy integration into existing systems. This sensor is suitable for applications in industrial automation, environmental monitoring, and DIY projects requiring accurate liquid level detection.