TP-Link Tapo T310 with built-in Swiss-made sensor features a typical accuracy of 3%RH, 0.3C / 0.54F. By obtaining and updating data every 2 seconds, the sensor gives you accurate current information. Humidity and temperature can impact your personal health and comfort. Check a rooms real-time temperature and humidity with the Tapo app from anywhere, at anytime. Thanks to its low-power wireless technology, Tapo T310 has an up to 2 years battery life with the replaceable CR2450 coin battery.
Features:

Fast & Accurate Monitoring - Detects temperature and humidity with great accuracy; Updates every 2 seconds; (temperature thermometer Accuracy: 0.3 C, 3% RH)

Home Automation - Automatically turns on/off home electronics when settings fall outside their present ranges; Tapo hygrometer humidity meter is a great tool for your home automation; also can be used as baby room thermometer , outdoor thermometer and greenhouse thermometer

Free Data Storage & Visual Graphics - Tapo humidity sensor records temperature and humidity data and generates periodic data summaries. Up to 2 years free cloud data storage, and export at any time

Real-Time Notifications - Receive instant alerts on your phone whenever levels fall outside present ranges. Set up quickly and easily through the free Tapo app

Flexible Installation - Hang it with a lanyard, attach it on a surface with an adhesive or magnet, or simply place it on a desk

Voice Control Manage your Smart Temperature & Humidity Monitor with voice commands via Amazon Alexa( only can control Temperature) or the Google Assistant

Hub Required: The Tapo Hub is required to support all smart features: Tapo H100 or Tapo H200 (sold separately)