Meross: Intelligent temperature/humidity sensor without hubThe device is compatible with Apple HomeKit, Amazon Alexa, Google Assistant and SmartThings. It enables remote monitoring of changes in ambient temperature and humidity anytime, anywhere (with an internet connection).Precise sensor technology:The built-in 4th generation high-precision Swiss sensor ensures accurate detection of temperature and humidity changes. Monitoring and notifications with the Meross app:The Meross app allows you to monitor temperature and humidity anytime and anywhere, e.g. in the children's room, fridge or basement. Real-time notifications keep you up to date. Receive instant updates via the app if the temperature and humidity values exceed your predefined limits.Automation and overview of your data:Set temperature and humidity conditions to trigger Meross device automation. The automation can control the switching on and off of plugs, lamps and switches. View and export the last 2 years of temperature and humidity data with the Meross app. The data is stored for 2 years.Features: -Monitoring of temperature in the range from -20 to 60 °C -Accuracy of temperature measurement: +/- 0.3 °C -Measurement range for humidity from 0 to 95% RH -Accuracy of humidity measurement: +/- 5% RH -Control via the app with data history of 2 years -Adaptable to different room requirements, e.g., Bedroom, refrigerator, cellar, greenhouse -Automation of devices according to temperature and humidity conditions -Compatibility with common smart home systems: Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings -Powered by solar and CR2477 battery -Dimensions: 5.6 x 5.6 x 1.9 cm.