Upgrade: Waterproof Level---IPX7; Wireless swimming pool thermometer is made of high-quality and durable materials, which improves waterproof performance, prevents the LCD screen from fogging during use and prolongs 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 Reading: With clear LCD display; Optional 12/24H time display; Optional indoor and outdoor temperature display /; With built-in sensitive contact type probe, it can detect 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 host location can be displayed on the same screen; Temperature error within 1C; The maximum transmission distance of the swimming pool thermometer is 60m. Multiple Uses: The swimming pool thermometer is ideal for indoor and outdoor use such as swimming pools, hot tubs, fish ponds, aquariums, baby baths, spas and all other types of places.