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.