[Accurate Measurement] - The pool thermometer features a clear LCD display, with optional 12/24-hour time display, providing accurate measurements in Fahrenheit and Celsius. The water tank sensor's temperature detection range is -40 ℃ ~ +70 ℃ (-40 ℉ ~ 158 ℉), and the indoor unit's temperature detection range is -9.9 ℃ ~ +50 ℃ (14.2 ℉ ~ 122 ℉). Records MIN and MAX temperature values. [Wireless Connection] - Wireless Range: 433MHz/100m. The WiFi wireless pool thermometer is connected in one direction, allowing you to check the temperature reading using the receiver without leaving the room. Temperature error of ±1℃, transmission distance of 60 meters. [Pool Thermometer] - A floating pool thermometer can float on the water surface and measure the water temperature 100 meters above the water and 60 meters below the water. Measurement data is transmitted to the station via radio and can therefore be read on the base station or the transmitter itself. [Versatility] - The practical wireless thermometer allows you to track the temperature in real time and enjoy swimming at the optimal temperature. It is very suitable for indoor and outdoor use, including swimming pools, hot tubs, fish ponds, aquariums, baby bathrooms, spas, and all other types of places. [High Dust and Water Resistance] - This LCD digital pool thermometer is made of durable and high-quality materials. It is highly dust and water resistant, which helps prevent the LCD screen from fogging up during use and extends its lifespan.