Feature: 1. Support indoor and outdoor temperature/humidity large/small value memory function, temperature display format selection (°C/°F). 2. With indoor and outdoor temperature trend value indication, indoor and outdoor low voltage indication. 3. Support seven languages to display the week, such as English, German, French, Italian, Dutch, Spanish, Danish. 4. Designed with 6 function buttons: MODE, UP/MEM, DOWN, ALARM, SEARCH, LIGHT/SNOOZE, easy to operate. 5. Install the battery and you can use it, adjust the mode you need according to the manual.(Battery Not Included) Specification: Item Type: Thermohygrometer Material: ABS Color: As shown in the picture Display Screen Size: Approx. 14.8x11cm / 5.8x4.3in Weight: Approx. 519g / 18.3oz Plug&Voltage: EU 230-240V Display Battery: 2 x AA (battery not included) Sensor Battery: 2 x AAA (battery not included) Function: Plug-in and battery dual-purpose function How to Use: Install the battery by yourself, you can use it, adjust the mode you need according to the manual. Application: for indoor Feature Ø Five-level weather forecast indicator icons: sunny, half sunny, cloudy, rainy, thunderstorm Ø Cloud dynamic display Ø 6 function buttons: MODE, UP/MEM, DOWN, ALARM, SEARCH, LIGHT/SNOOZE Ø RCC receiving system: DCF Ø Seven languages display the week: English, German, French, Italian, Dutch, Spanish, Danish Ø 6-digit time display: hour, minute, second Ø 2014-2099 calendar indication, 2 digits show the month, 2 digits show the date Ø 12/24 hour system selection Ø Temperature display format selection (°C/°F) Ø 3-digit indoor temperature display, resolution 0.1℃, detection range 0℃-50℃, detection time 30 seconds Ø 2-digit indoor humidity display, resolution 1%, detection range 20%-95%, detection time 30 seconds Ø 3-digit RF outdoor temperature and 2-digit humidity display and five-level antenna signal display Ø 2-digit outdoor humidity display, detection accuracy 1%, detection range 20%-95% Ø Indoor and outdoor temperature/humidity large/small value memory function Ø Indoor and outdoor temperature trend value indication Ø Indoor and outdoor low voltage indication Ø No keystroke prompts Ø Alarm setting Ø Snooze function, 5 minutes delay alarm Ø Air pressure change trend value indication Ø LED backlight Ø AC detection backlight long-bright function Ø World time zone setting, -12/+12 hour offset Ø Daylight saving time function Ø Low voltage detection function Ø Power supply voltage: 2.5V-3.3V Ø Quiescent current: <30u Ø RCC receiving graphics: 1. When entering RCC reception, the tower part of the RCC sign flashes at a frequency of 1HZ. 2. When the signal is received, the RCC tower part sign is stationary, and the arc antenna flashes at a frequency of 1HZ. 3. When the signal is weak and the correct signal cannot be distinguished, the tower part flashes at a frequency of 1HZ. The arc antenna part is not displayed Ø When the signal is received successfully, the RCC receiving flag will be displayed and exit the receiving state Ø During the receiving process, press the "-" key for 2 seconds to exit the RCC receiving state. Except for single-pressing the "SNOOZE/LIGHT" button to light up the backlight function, pressing other keys has no function Ø If the signal reception fails on the same day, the next reception time is 1 o'clock the next day, and automatically enters RCC reception at 1, 2, 3, 4, and 5 in the morning Ø In the process of receiving RCC, when encountering an alarm, it will exit RCC reception and switch to the alarm Ø When DST signal is received, the DST sign of LCD will display Ø When the RCC symbol is displayed, after resetting the time, the RCC symbol will be turned off. Weather forecast function: Ø Weather forecast refers to the trend of weather conditions in the next 24 hours Ø The weather is divided into 5 levels: sunny>semi-sunny>cloudy>rainy>thunderstorm Ø Weather pattern changes refer to barometric pressure changes Ø If the air pressure changes more than ±2 HPA within 1 hour, the weather pattern will change. It rises and changes toward sunny days, and when it descends, changes toward rainy days. Ø Within 1 hour, the air pressure rises 5HPA weather pattern changes to sunny, and decreases 5HPA weather pattern changes to heavy rain. Ø The weather pattern is half sunny by default Ø The weather forecast must be more accurate under natural ventilation conditions. There will be large errors in indoor conditions, especially in air-conditioned rooms. . Package List: 1 x Instruction Manual1 x Thermohygrometer(Battery Not Included)1 x Sensor(Battery Not Included)1 x Adapter Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.