[Touchscreen and \/ switch] -Touch control used to control the temperature unit. Press \/ History once to change the temperature unit. Press the Light button once to turn on the light. It will automatically turn off within 10 seconds without you having to perform any action. With the backlight on, press once to turn off the light. [Show \/ Clear Temperature Data] -Long press \/ History to display the temperature and humidity of the past 24 hours or the past 24 hours. Press and hold MAX \/ MIN CLEAR for 3s-5s to clear the maximum and minimum records. It is very useful for understanding the daily climate or climate change in the four seasons and can be used to predict the tendency to take care of your health. [Battery type and low battery warning] -Station: 2 * 1.5V AAA batteries; 2 * 1.5V AAA batteries (batteries not included). Once the remote control sensor or measuring station is turned off, a charging icon will appear to remind you that you need to replace the battery. [Multiple placement methods] -Digital temperature and humidity monitor, with workbench, wall and magnetic mounting parts, as desired Sensor can be hung or placed horizontally. With IPX-4 waterproof sensor, it is very suitable for outdoor and indoor use, such as B. Used in offices, hotels, greenhouses, hatching rooms, pantries, schools, laboratories, baby rooms, etc. Product features: large touchscreen touch screen Turns the screen on (automatically turns off after 10 seconds) optional s C \/ F conversion Maximum and minimum temperature Storage function humidity View temperature and humidity history 3 methods of installation-desktop (placement), lifting hole (wall), magnet back (adsorption) Update temperature and humidity every 10 seconds to accurately reflect the temperature Product parameters: Indoor 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 (standard is C) Temperature resolution: 0.1 C \/ Humidity Resolution: 1% Update rate: every 10 seconds Temperature error: 1 Humidity error: 5% Power supply: AAA batteries (not included) Note: 1. Do not expose the device to extremely high or low temperatures, otherwise the electronic components and plastics may be damaged. 2. Please replace the battery when the LCD screen stops working. 3. Do not immerse the product in water. The package contains: 1 x thermohygrometer 1 x user manual