【Upgrade】: Waterproof grade --- IPX7; The wireless swimming 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 recording. 【Accurate Display】: With clear LCD display; Optional 12/24 hour time display; Optional indoor and outdoor temperature display ℃/℉; With the built-in sensitive contact probe, the water temperature can be detected quickly and accurately. Temperature measurement range (pool thermometer): -40℃~+70℃（-40℉~158℉）; Temperature measurement range (indoor receiver): -40℃~+70℃（-40℉~158℉）. Supports MAX/MIN temperature recording. 【Wireless connection】: The real-time temperature of the water where the sensor is located and the real-time