1、EASY INSTALLATION: The liquid level sensor (sensing piece) is installed above and below the outer wall of the measured pipeline (high and low levels of the liquid). 2、APPLICABLE LIQUID: Suitable for liquid level detection of various liquids such as water, turbid liquid, strong acid, strong alkali, and strong corrosive liquid, etc. 3、NON CONTACT: The liquid level switch sensor is non contact design, with NPN normally open switch mode, ensuring stable and reliable operation. 4、EXCELLENT CHIP: The liquid level switch sensor adopts advanced high speed signal processing chip to detect the liquid level in sealing containers. 5、WIDE APPLICATION: Suitable for water tower and tank water supply, fish tank live water processing, sewage processing equipment, smart water supply, medical device, etc.