· 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; Powered by 3A batterys (included)· 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· Compatible with 3 Sensors: Temperature and humidity monitor can display the readings from up to 3 temperature sensors to monitor different locations; Additional sensor can be ordered