1、WiFi Connection: Smart temperature hygrometer sensor, no hub required, connects to 2.4GHz WiFi, 5GHz WiFi is not supported. You can view the smart humidity sensor remotely. 2、Multifunctional: The smart temperature sensor supports remote monitoring, free app notifications, °F °C readings, history view, and temperature and humidity graphs. Supports voice control so you can hear the current temperature and humidity by voice. 3、Remote Supervision: Stay informed of temperature and humidity changes with our temperature and humidity sensors. When the indoor environment is out of the comfort zone, you will receive a notification on your mobile phone immediately. 4、Home Smart Linkage: Temperature and humidity sensors can be connected to other smart devices in your home. For example, when the room temperature exceeds 35°C, the air conditioner will turn on automatically. When the humidity is below 20% relative humidity, the humidifier will spray. 5、Versatile Installation: Indoor temperature humidity meter is compact and suitable for small spaces such as potted plants, reptile breeding rooms, cigar humidors, etc. It can be placed directly on the table or stuck to the wall, no data cable required. Item Type:  WiFi Temperature Humidity Sensor Material: ABS Battery: 2 x AAA 1.5V alkaline batteries (batteries not included)\ Temperature Detection: -10°C to +60°C Humidity Detection: 0-100%RH Temperature Measurement Accuracy: ±1°C Humidity Measurement Accuracy: ±5%RH 1 x Wifi Temperature Humidity Sensor 1 x Double Sided Adhesive 1 x User Manual