Specifications:

• Multi-channel Hygrometer: The hygrometer thermometer comes with 1 main unit (built-in sensor) and 1 remote sensor, it can display the temperature and humidity of 2 different areas. The indoor outdoor thermometer hygrometer has 3 channels for remote sensor, you can add multiple channels to monitor up to 4 locations. Additional remote sensor sold separately
• Backlight and Touch Screen: The remote thermometer features touch screen and 4 inch high clear HTN LCD display, 178° wide view screen. Backlight for use in low light conditions
• Trend Indicator and High/Low Records: The humidity meter displays indoor and outdoor temperature and humidity readings with trend arrow and records all-time/24-hour maximum and minimum, to always keep you aware of slight changes in your living environment to make the necessary adjustments in time.Room temperature range: -4° F-158 °F (-20° C-70 °C)
• Outdoor temperature range: -40°F - 158°F (-40°C-70°C)
• Humidity range: 20%-95%
• Comfort display: Dry, comfortable, wet
• Temperature display unit: °C/°F Optional (Default value: °C)
• Temperature resolution: 0.1°C/°F
• Humidity resolution: 1%
• Refresh rate: 10 seconds.
• Error: Temperature plus minus 1℃ humidity plus minus 5%
• Wireless range: 60 m /197 ft
• RF Radio frequency: 433 MHz
• Power supply: No. 7 battery (regular shipment does not include battery)

Wireless Indoor Outdoor Thermometer with 1 Remote Sensor, Home Room Thermometer, Greenhouse Temperature and Humidity Monitor