Intelligent temperature and humidity sensor - Measures temperature and humidity with precise technology, updating values once per second. - The 2.9 inch LCD displays five data items clearly: temperature, humidity, brightness, time, and date, making it easy to monitor your indoor climate at a glance. Versatile alarm mode - Use the app to set individual upper and lower limits for temperature and humidity. - If any value crosses the set thresholds, you will be notified, helping you protect the monitored space and its contents. Flexible power supply - USB powered with a built-in 500 mAh battery, providing up to 4 hours of operation during a power failure. - After just 2 hours of charging, the device is ready to use again, ensuring reliable 24/7 monitoring when power is available. Switchable temperature units - Supports both Celsius and Fahrenheit, with an easy switch to match your preferred unit. Applications - Children's rooms: monitor temperature and humidity to support a healthy and comfortable environment. - Greenhouses: maintain optimal conditions for plant growth with timely alerts. - Wine cellars: track climate parameters to protect stored beverages and maintain quality.