500FT Longer Range: indoor outdoor thermometer wireless with strong signal penetration humidity sensors to get the temperature and humidity records from 500ft/150m remote range away; Tabletop or wall mountable design;Includes 4 AAA batteries | Wide Temp & Humid Range: Inside outside thermometer hydrometer measures indoor outdoor temperature and humidity percentages simultaneously; Indoor/outdoor temperature range: -4°F to 158°F (-20°C to 70°C); Humidity range: 10% to 99% | MAX&MIN Record: Weather stations record all time/24 hours max and min temperature and humidity readings; Wireless thermometer indoor outdoor with temperature trend arrows indicates whether it's getting warmer or colder near the remote temperature monitor | Widely Application: Indoor/outdoor hygrometer wireless ensures proper temperature and humidity control, which has important health benefits, thermometer digital can be placed in baby room, nursery, cellar, basement, warehouse and greenhouse | ThermoPro is now TempPro! TempPro will maintain same mission, same operation backbone and same products as ThermoPro; Random delivery, you may receive either a ThermoPro or TempPro branded product