1.High accuracy wireless pool thermometer: with highprecision sensors, RF transmission, data update once per second, high measurement accuracy, accurate to ±1°C. The maximum wireless connection range of the Runqin pool thermometer is 197 ft. 2.Easy to set up and operate: once the batteries are installed (not included), the device immediately starts displaying the temperature in the pool. The colour units setting came as standard, and all you had to do is set the time. Monitor has large numbers for easy reading from a distance. This allows you to easily check the temperature of the pool. 3.Various uses: Our Runqin wireless pool thermometer is suitable for various indoor and outdoor scenarios. It can be used in swimming pools, spas, aquariums, fish ponds and more. 4.The lazy way: this is a very convenient way to find out the temperature of your pool. Once set up, simply look at the display and immediately know what the water temperature is, without ever putting a foot outside, getting out the thermometer, immersing your hand in the pool, etc.