Wireless pool thermometer, you can use your home receiver to check the temperature readings. Accurate reading: Supports Fahrenheit and Celsius readings. High quality: The thermometer is made of high-quality materials, sturdy and durable. Waterproof: The thermometers are very suitable for swimming pools, fish ponds, aquariums, baby bathtubs, spa centers, etc. The pool thermometer fluctuates for easy reading.,Attention: To prevent water from seeping in, please tighten the cover after installing the battery (battery not included)