[High quality material] The water level sensor is made of high quality PP material, which has good corrosion resistance and is durable. [High Sensitivity] - The liquid level sensor is professionally designed and processed with excellent sensitivity, high precision and reliability. [Practical function] L The float switch is mainly used to detect the liquid level in the tank, and can operate the pump, indicator, alarm or other devices. Used to detect the level of liquid in tanks and to operate pumps, indicators, alarms or other devices. [Auto-adjust] - The switch vertical float switch can be automatically adjusted, easy to operate, easy to install, safe and reliable, non-toxic and environmentally friendly. Automatic adjustment: The switch vertical float can be adjusted automatically, easy to install, safe and reliable, non-toxic and environmentally friendly. [Low demand and universal] This level sensor d compact, low demand and easy to install can be used with most liquids, suitable for hydroponics, saltwater tanks, freshwater tanks, gardening, aquariums, etc.