Temperature and humidity function: intuitive display of temperature and humidity readings for quick assessment of ambient conditions. Upgraded external sensor: the sensor line can be placed outdoors, and indoor and outdoor temperatures can be displayed at the same time. Sensing wire length: 1.3 m. Time function: in addition to basic time display, this device also includes an alarm clock and a calendar display showing month and date. Memory function (upgraded version): press the MEMORY button to display the maximum and minimum temperature and humidity memory. Note: this function is available only on the upgraded version, not on the normal version. Practical applications Home living room or kitchen: monitor room comfort at a glance, set alarms for daily routines, and use the calendar to track dates. Nursery or children's room: ensure a safe sleep environment by monitoring temperature and humidity, with the option to view historical extremes on the upgraded version. Greenhouse or outdoor space: place the sensor outdoors to observe ambient conditions while the indoor display shows the corresponding indoor readings.