1. HIGH PRECISION SENSOR With its highprecision sensor, this floating pool thermometer can quickly and accurately detect the water temperature with an accuracy of ±1℃(±1.8℉). The temperature detection range of the pool sensor is 40°C 70°C (40°F158°F), and the detection range of the indoor temperature of the connected pool thermometer is 9.9°C 50°C (14.2°F122°F). 2. Dustproof and waterproof This pool detector has a waterproof IPX7 housing and is also dustproof. The connection of the indoor thermometer can prevent the LCD screen from fogging up during use and extend its life. 3. Upgraded Networked Pool Indoor Thermometer The upgraded networked pool thermometer features a clear LCD display that simultaneously displays the indoor and outdoor temperatures of the pool. It has an optional 12/24 hour time display, delivers accurate readings in Fahrenheit and Celsius as well as minimum and high values. Maximum temperature values can be stored. 4. Wireless Connection: 433MHz/100M Pool Thermometer The floating pool thermometer floats on the water and the wireless WiFi pool thermometer has unidirectional connectivity, so you can check the temperature values with the help of the receiver without leaving the room. The maximum transmission distance is 60 metres.