This product consists of an indoor unit and an outdoor unit. The indoor unit can be placed on a desktop, bedside, or other indoor locations, while the outdoor unit can be positioned in areas such as gardens, garages, or orchards. It displays indoor and outdoor temperature and humidity clearly, helping maintain a comfortable indoor and outdoor environment. 5.3-inch large LCD color screen for easy reading of information. Digital color sensor provides accurate temperature and humidity detection. Automatically acquires weather data and synchronizes. Smartphone app control for convenient operation, multiple functions, and shared access. Features alarm settings for air pressure, wind speed, temperature, and humidity with reminder functions. Allows viewing of historical temperature and humidity data trends. Supports up to 3 external sensors to monitor temperature and humidity from different locations simultaneously. Customizable display content based on user preferences. Multiple mounting options for easy installationcan be wall-mounted or placed on a desktop. Input: 100240V, 50/60Hz Output: 5V, 2A Humidity Display Unit: RH% Temperature Range & Accuracy: -20C to 60C, 0.5C Humidity Range & Accuracy: 0% to 99%, 2%RH Operating Temperature: -20C to 60C Sensor Battery: 3V, 1000mAh Note: Product design may vary slightly between batches. Actual product may differ in appearance or color compared to images, but this does not affect functionality. Color: Black + White Material: ABS + PC Model: B:1 to 3 Package Contents: 1 x Main Unit 3 x Sensors Note: Other items not included. Lighting and screen differences may cause slight color variations between the image and the actual product. Measurement error allowed: 13 cm.