Temperature & Humidity Sensor 10-Pack, Hub Required!

This pack includes 10 Temperature & Humidity Sensors.  Please note: this product requires a YoLink Hub or SpeakerHub. INTRODUCTION: Smart thermometer and hygrometer monitors, displays, records, and reports to the YoLink app the current temperature and humidity level FEATURES & BENEFITS: Temperature and humidity displayed on the YoLink app LCD display shows current temperature (Celsius or Fahrenheit) and current humidity (%) Extremely accurate temperature and humidity figures (+/- .3 degrees Celsius and +/- 3 percent humidity) Self-calibration available via the YoLink app Portable; may be placed anywhere in your home or wall-mounted High/low temperature alerts High/low humidity alerts Historical temperature and humidity graphs displayed in hourly and daily figures Wireless operation; no 120V outlet or wiring required Battery-powered (two standard alkaline AAA batteries, included) Up to 2 years of battery life, compared to 1 year for othe