WIFI thermometer hygrometer sensor (does not support 5GHz WiFi): No hub required, connect to 2.4GHz WiFi. You can monitor the intelligent humidity sensor remotely. The smart temperature sensor supports remote monitoring, free app notifications, F/C readings, historical record viewing, and temperature and humidity graph functions.Third-party voice support: WiFi temperature and humidity sensors are compatible with Alexa and Google Home. You can hear the current temperature and humidity by voice. For example, you can say, "Alexa, what is the temperature in the living room?"Home Smart Linkage: The temperature and humidity sensor can be connected to other smart devices in the home to improve indoor heating and cooling and make your home more comfortable. For example, the air conditioner switches on automatically when the room temperature exceeds 35C. The humidifier sprays when the humidity is less than 20% relative humidity.Device sharing and high-quality customer service: You can share your added devices with your family members so that they can also monitor the environment. We offer a 24-month warranty and friendly customer service.Compact design and multiple installation methods: The indoor WiFi thermometer and hygrometer are small enough to fit in potted plants, reptile breeding rooms, cigar humidors and other small spaces. It can be placed directly on the table or stuck on the wall. There is no data cable, so it is more convenient and beautiful.