This floating water thermometer transmits data wirelessly. It floats on the surface of your pool or spa and takes accurate water temperature readings. Theres an LCD screen you can view the temperature from when you are near or inside the pool/spa. Dive into intelligent pool and spa maintenance with the Explore Scientific Wireless Floating Pool and Spa Sensor. This sensor adds a touch of innovation to your aquatic oasis, wirelessly providing realtime data on water temperature and other key parameters. The floating design ensures the sensor effortlessly navigates your pool or spa, making it an unobtrusive yet invaluable tool for maintaining the perfect aquatic environment.