Wireless Smart Temperature Humidity Sensor – 230ft outdoor wireless transmission with low power consumption. Our long-range coverage allows it to be used in areas where most residential Wi-Fi systems struggle, such as basements, outdoor porches/patios, sheds, detached garages, and outbuildings far from your property. Real-time Environment Monitoring – Stay informed of the temperature and humidity levels anytime. APP Remote Control – Use the app to view current temperature and humidity, and easily control your home environment by adjusting connected appliances (e.g., air conditioner to set temperature or turn on a humidifier connected to a smart plug) to improve your living space. Hub-Free – No hub required. Simply connect the sensor to your Wi-Fi router, then add devices to your home. With the smart app, you can use it freely without time or distance limits. Large LCD Screen – Clear, large characters easy to read from a distance. Elegant white design with round edges, a nice decor for your home.