IP68 Waterproof Swimming Pool Thermometer: Wireless pool thermometer with IP68 waterproof rating, the waterproof cover and the interface of the precision design and manufacture, the fit is extremely high, to ensure stability and reliability in a variety of complex environments, very suitable for outdoor activities or industrial environments, such as the use of extreme conditions High Accuracy Pool Thermometer: The pool thermometer is equipped with a high precision electronic sensor for very accurate detection. The wireless thermometer is equipped with a clear LCD display that shows the temperature over a 12/24 hour period. The pool sensor recognises indoor temperatures from 0°C to +50°C and outdoor temperatures from -40°C to +70°C Wireless Connectivity 80-120m: The swimming pool thermometer is equipped with an RF 433 radio transmitter for an effective monitoring distance of up to 50 metres and up to 80-120 metres in an unobstructed environment. You can view temperature readings