Features:100% brand new and high qualityThere are 4 types, 1.5, 2, 4, 5 meters, 3 as 1 set.Anti-short circuit function, and won't cause malfunction due to moisture or conductivity of water tank or well wall.Adopts electrode rod to form an insulating sleeve with plastic, safe to use.A float switch is a device used to sense the level of liquid within a tank, it may actuate a pump, an indicator, an alarm, or other device.Use them with hydroponics, saltwater tank, freshwater tank, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating etc. Package Includes:1x Water Level Sensor Specifications:Material:ABS+Stainless SteelSize: 1.5, 2, 4, 5 Meters, 3.3/6.6/13/16 Foot note:Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!