Easy to Place: With the lanyard loop, you can easily place this room thermometer anywhere. Package contents: 2 x WiFi Temperature Sensor wth 3 AA batteries, 2 x Lanyard Loop, 1 x User Manual.Fast & Accurate: Equipped with a Swiss made sensor, this WiFi thermometer provides precise readings. Temperature is accurate to 0.54/0.3, and humidity is 3%RH. By refreshing every 2s, you'll stay regularly updated. Now supports widget function.Smart WiFi Control: Easily monitor temp and humidity data in real time from anywhere. With stable WiFi and Bluetooth connection via the Home app, you'll have more opportunities to react to changes in your air quality (not support 5G WiFi).Alert Function: Set preset temp and humidity ranges, and receive an app alert immediately whenever levels fall out of that range, which helps you react faster to sudden changes in your basement, greenhouse, etc. Only supports Bluetooth settings.Data Storage & Export: Our WiFi temperature sensor uploads data to the App when connected via Bluetooth or WiFi. Enjoy 20 days of online data storage view and export up to 2 years' worth of data seen through clear historical trends and graphs.