Data in two separate locationsThe receiver of this wireless outdoor indoor hygrometer thermometer displays the temperature and humidity in the location where it was placed, as well as the location data of the transmitter; Receiver internal temperature probe range: -20 ~ 60 C, 1 C; Humidity measuring range: 10 ~ 95% RH, 5% RH. Single radio 90m Having a transmitter RF signal range of 90m, The digital hygrometer thermometer makes it easy to know the temperature. and humidity data away from your home; Transmitter internal probe temperature range: -40 ~ 70 C. External temperature probeWith the measuring range of -50 ~ 125 C, the transmitter probe external temperature of 2 m can be used in liquid (except sea water) or narrow place. Transmitter internal/external probe data will be collected simultaneously, indoor hygrometer thermometer receiver will display the results one by one or press CH/R button to check specific channel data. Min and MaxThe large backlit LCD screen of the indoor and outdoor thermometer displays the minimum/maximum value for 24 hours or always and the data is refreshed every 10 seconds.