FeaturesBuilt-in high precision sensor to monitor temperature and humidityElegant design with a 1.5″ LCD displayInterconnect with another smart device via Bluetooth gatewayUltra-long Battery LifeData retention supportTemperature and humidity are closely linked to health. Sudden changes can result in dry mouth, catching a cold, fever, allergies and general discomfort. The Xiaomi Mi Temperature and Humidity Monitor 2 alerts you to subtle changes in temperature and humidity and connects to other equipment to adjust the temperature and humidity throughout the house and ensure greater comfort.