Features 1、Measurement Accuracy Range: The temperature measurement range of temperature humidity sensor is from ‑20℃ to 60℃, the temperature accuracy is ±1℃, the humidity accuracy is ±5%RH, and the humidity measurement range is from 0% RH to 100 percent RH. 2、APP Alarm: When the indoor temperature and humidity are higher or lower than the normal value, the sensor will send a message to remind you through the APP. 3、Compatible With: The sensor can be used with for Smart Life. You can let your smart home run automated processes on them. 4、Easy Installation: The sensor is applicable to a variety of complex application sites and can meet all your installation environment requirements. 5、Simple Design: Adopts simple design, this sensor can well match with your home decoration, you can take it with confidence! Specification Item Type: WiFi Thermometer Hygrometer Material: ABS Mode: TH01 Support Wireless Network Protocol: WIFI 2.4GHz Support Wireless Standard: IEEE 802.11b, g, n Power Supply: AAA battery x 2 (shipped without battery) Temperature Measurement Range: - 20℃ to 60℃ Temperature Accuracy: ± 1 ℃ Humidity Measurement Range: 0% RH to 100 Percent RH Humidity Accuracy: ± 5% RH Package List 1 x WiFi Thermometer Hygrometer 1 x Manual 1 x Double Sided Adhesive Tape