YoLink 2-Pack X3 Version Temperature Humidity Data Logger, Longest Wireless Range, 5+ Years Battery, Emails/Text/App Alerts, Alexa, Best Freezer, Greenhouse Monitor. Hub Included

Monitor & Manage Temperature & Humidity Remotely: using the free, no subscription-required and user-friendly YoLink app, you will know the temperature and humidity at a glance, whether you are in the other room or on the other side of the world. | Be Informed of Abnormal Conditions: receive smartphone push notifications, email, SMS notifications when a condition you have set previously is met. Additional notifications and central station monitoring service are optional upgrades. | Commercial Grade Accuracy and Environmental Range: designed with home and business applications in mind, precision components are utilized, to provide the accuracy you demand. Temperature acccuracy of 0.54 and humidity accuracy of 3% RH and extended operating range of -22 to 158 F. | IFTTT & Alexa Integration: trigger IFTTT applets based on high or low temperature set points reached (when device alerts). Voice query Alexa for the temperature (only; humidity not supported at this time). Triggering Alexa routines is not supported at this time. | Long-lasting Performance: X3 Temperature Humidity Sensor features an exceptional 5-year battery life, guaranteeing uninterrupted and dependable monitoring of temperature and humidity levels over an extended period without the need for frequent battery changes. | Offline Data Logging: The X3 Thermometer Hygrometer comes equipped with an innovative offline data logger, allowing you to capture and store temperature and humidity information even when not connected to a hub. Retrieve and review the recorded data conveniently whenever your device is back online.