The DFRobot Non-contact Capacitive Liquid Level Sensor is designed for accurate liquid level detection in tubes with an outer diameter (OD) of 10mm. Utilizing capacitive technology, this sensor detects changes in the dielectric properties of the liquid, offering high precision without physical contact. Its non-contact design prevents wear and tear, ensuring long-lasting durability. Ideal for a wide range of applications, including small liquid containers and tubing, it’s compatible with Arduino for easy integration into DIY projects or automated systems. With stable performance across various liquid types, it provides a reliable and maintenance-free solution for liquid level monitoring in tight spaces.