Fast & Accurate Monitoring - Detects temperature and humidity with great accuracy. Updates every 2 seconds. (Accuracy: ±0.3 °C, ±3% RH) Home Automation - Automatically turns on/off home electronics when settings fall outside their preset ranges. Free Data Storage & Visual Graphics - Records temperature and humidity data and generates periodic data summaries. App Notification Alerts - Receive instant alerts on your phone whenever levels fall outside preset ranges. Flexible Installation - Hang it with a lanyard, attach it on a surface with an adhesive or magnet, or simply place it on a desk. Package ContentsTapo T310Battery CR2450LanyardQuick Start Guide3M AdhesiveAdhesive MagnetEject Pin