Check the listing for details. VIVOSUN Digital Hygrometer Thermometer Humidity Monitor w/ Remote Sensor. Condition: New. Listed at 18.99 USD. About this item Precise Data: VIVOSUN wireless indoor outdoor thermometer records accurate all time/24 hours max and min temperature and humidity readings; Temperature trend arrows indicate whether it’s getting warmer or colder near the remote temperature monitor; Temp Accuracy: ± 1.5°F/± 1°C; Humidity Accuracy: ±5% Wide Temp and Humid Range: Inside outside thermometer hygrometer measures indoor outdoor temperature and humidity percentages simultaneously: The outdoor/indoor thermometer range: indoor: -4℉-158℉ (-20℃-70℃), outdoor: -40℉-158℉ (-40℃-70℃); Humidity range: 20%-95% Hands Free Monitoring: Connect up to 3 strong signal penetration humidity sensors to get the temperature and humidity records from 200ft/60m remote range away (enhanced Wireless Frequency: 433 MHz); Tabletop or wall-mountable design; Powered by 4 x AAA battery (included) Backlight & LCD Touchscreen: Large LCD display features a blue backlight and touchscreen, ensuring the display is easy to read even in dim light conditions; Backlight can be turned on/off, so it’s easy to use whether in the bright sun or pitch black; 12 seconds auto-off Multiple Applications: The VIVOSUN thermostat can be connected up to 3 wireless sensors (please be advised the package come with 1 sensor), features tabletop, wall, hanging and magnet mounts, so it’s easy to put in any room; You can have it in your baby room, cellar, basement, garden, nursery, grow tent or officeAbout this item Precise Data: VIVOSUN wireless indoor outdoor thermometer records accurate all time/24 hours max and min temperature and humidity readings; Temperature trend arrows indicate whether it’s getting warmer or colder near the remote temperature monitor; Temp Accuracy: ± 1.5°F/± 1°C; Humidity Accuracy: ±5% Wide Temp and Humid Range: Inside outside thermometer hygrometer measures indoor outdoor temperature and humidity percentages simultaneously: The outdoor/indoor thermometer range: indoor: -4℉-158℉ (-20℃-70℃), outdoor: -40℉-158℉ (-40℃-70℃); Humidity range: 20%-95% Hands Free Monitoring: Connect up to 3 strong signal penetration humidity sensors to get the temperature and humidity records from 200ft/60m remote range away (enhanced Wireless Frequency: 433 MHz); Tabletop or wall-mountable design; Powered by 4 x AAA battery (included) Backlight & LCD Touchscreen: Large LCD display features a blue backlight and touchscreen, ensuring the display is easy to read even in dim light conditions; Backlight can be turned on/off, so it’s easy to use whether in the bright sun or pitch black; 12 seconds auto-off Multiple Applications: The VIVOSUN thermostat can be connected up to 3 wireless sensors (please be advised the package come with 1 sensor), features tabletop, wall, hanging and magnet mounts, so it’s easy to put in any room; You can have it in your baby room, cellar, basement, garden, nursery, grow tent or office