How does this sensor stay connected without requiring a hub or relying only on home WiFi?

It connects automatically over Amazon Sidewalk, a free nationwide network covering approximately 95% of the US population, so no base station is needed and it does not depend on your home WiFi reaching places like attics, closets, or basements.

What temperature and humidity range can this sensor monitor indoors?

It can monitor indoor temperatures from -4 to 122 degrees Fahrenheit with plus or minus 0.9 degree accuracy, and humidity up to 95% RH with plus or minus 7% accuracy.

Questions & Answers: Ring Temperature & Humidity Sensor, Indoor Climate Monitor, Amazon Sidewalk, No Hub Required, Up to 5-Year Battery Life, White

double click image to zoom in

Shop All Ring Products

Ring Temperature & Humidity Sensor - Indoor Climate Monitor, Amazon Sidewalk, No Hub Required, Up to 5-Year Battery Life

TRACK INDOOR TEMPERATURE & HUMIDITY: Monitor conditions from -4 to 122 degrees Fahrenheit (plus or minus 0.9 degree accuracy) and humidity up to 95% RH (plus or minus 7% accuracy) to help spot mold risk, moisture damage, or uncomfortable conditions before they become a problem.
NO HUB OR WIFI RANGE LIMITS: Connects automatically over Amazon Sidewalk, a free nationwide network covering approximately 95% of the US population, so there's no base station to buy and no dependence on your home WiFi's reach into attics, closets, or basements.
UP TO 5 YEARS OF BATTERY LIFE: Powered by 2 included AA alkaline batteries rated for up to 5 years of use (varies by event frequency and proximity to a Sidewalk Gateway), so it keeps monitoring with minimal upkeep.
BUILT-IN WIFI BACKUP & WORKS WITH ALEXA: Amazon Sidewalk keeps the sensor connected automatically even if your home WiFi drops, and real-time notifications integrate with the Ring app and Alexa for hands-free monitoring.

$34^.99 –