1、Smart Home Thermometer: Monitor temperature and humidity changes to create a comfortable environment. Ideal for babies to sleep well and wake up less. Easily see cold, warm, dry, and wet conditions at a glance, protecting your family's health. 2、High Accuracy Sensor Technology: Featuring the acclaimed temperature and humidity sensor, this thermohygrometer has a sophisticated structural design and AR algorithms to ensure high accuracy and speed of response. 3、Bluetooth Connectivity: Built in Bluetooth technology, when used with for Mijia Bluetooth gateway device, the meter can be linked with intelligent devices, which improves the indoor temperature and humidity environment and makes the home more comfortable. 4、Real Time Monitoring: You can check temperature and humidity levels and view historical data anytime, anywhere. The thermohygrometer has built in storage capacity to store each historical data every 15 minutes for up to 30 days. 5、Monitoring Range: Our temperature and humidity sensors can accurately measure temperatures ranging from -9.9 °C to 50 °C and humidity levels from 0% to 99.9%. Item Type: Bluetooth Temperature Humidity Monitor Screen Diameter: Approx. 49.9mm / 1.96in Bluetooth: Low Energy Bluetooth 5.0 Battery Type: CR2430 Cell Battery 50mAh (included) Temperature Range: -9.9 ~ 50°C Humidity Range: 0 ~ 99.9% (non condensing environment) Comfortable Temperature for Human Body: Winter: Temperature 20°C ~ 24°C, Relative Humidity 30% ~ 60% Summer: Temperature 23°C ~ 26°C, Relative Humidity 25% ~ 60% Weight: Approx. 85.00g / 3oz 1 x Temperature and Humidity Meter 1 x Wall Mount 1 x Stand 1 x User Manual