Description Product Features: Measure indoor and outdoor temperature and humidity, Celsius and Fahrenheit conversion The highest and lowest temperature and humidity memory function You can view historical temperature and humidity data Connect up to 3 outdoor units (conventional set with one outdoor unit) Two highly magnetic magnets on the back shell of the main unit can be attached to metal objects There is a bracket on the back of the host, which can stand in a horizontal position High sensitive touch button control, easy to use Comfort indicator, temperature and humidity trend indicator High-definition large-screen color LCD screen without angle With backlight, it will automatically turn off the backlight after 10 seconds without operation The outdoor unit can be hung with hanging holes, or it can be placed on a horizontal surface Waterproof XP4 outdoor unit Product parameters: Indoor temperature range: -4F-158F (-20C-70C) Outdoor temperature range: -40F-158F (-40C-70C) Humidity range: 20%-95% Comfort display: dry, comfortable, wet Temperature display unit: C / F optional (default is C) Temperature Resolution: 0.1C/F Humidity resolution: 1% Refresh rate: 10 seconds. Error: temperature plus or minus 1, humidity plus or minus 5% Wireless receiving range: 60 meters / 197 feet RF wireless frequency: 433 MHz Power supply: AAA battery (battery not included in delivery) Packing data: Single product size: host: 114*24*96MM transmitter: 100*35*20MM Product single net weight: Host: 142g Transmitter: 40g One for One package details: Packing list: host*1, transmitter*1 Please allow slight deviation in the measurement data and make sure you don't mind before ordering.