【Upgrade】: Waterproof level---IPX7; Wireless pool thermometer is made of high-quality and durable materials, which improves the waterproof performance, prevents the LCD screen from fogging during use, and extends its service life. 【Multifunction】: The multifunctional wireless pool thermometer brings much convenience to your life. The wireless pool thermometer includes time, indoor temperature, pool temperature and MAX/MIN temperature record. 【Accurate Reading】: With clear LCD screen; 12/24H time display optional; ℃/℉ optional indoor and outdoor temperature display; With built-in sensitive contact type probe, it can detect the water temperature quickly and accurately; Temperature Measuring Range (Pool Thermometer): -40℃~+70℃（-40℉~158℉）; Temperature Measuring Range (Indoor Receiver): -40℃~+70℃（-40℉~158℉）. Support MAX/MIN Temperature recording. 【Wireless Connection】: The real-time temperature of the water where the sensor is located and the real-time temperature of the room where the