Aqara Temperature And Humidity Sensor, Requires Aqara Hub,, Works With Ifttt Product Features ??NOTES?An Aqara Hub is required and sold separately. Requires a secured 2. 4 gigahertz WiFi network connection. The Aqara M2 or M1S Hub can connect up to 128 devices(*use of a repeater such as the Aqara Smart Plug or Aqara Smart Wall Switch(With Neutral) is required). ?REMOTE MONITORING?When the room temperature reaches above or below a certain threshold, the Aqara Temperature and Humidity Sensor can send a push alert to your phone or trigger the Aqara Hub night light. ?HOME AUTOMATION?The Aqara Temperature and Humidity Sensor can control other connected devices such as Aqara Smart Plug to ensure that your fan or humidifier maintains a constant level of comfort for you and your family. ?ACCURATE MEASUREMENT?Utilizes high-quality sensor from the industry-leading manufacturer, Sensirion. ?BUILT-IN AIR PRESSURE SENSOR?Monitors the ambient air pressure in the room. In addition, If you have any questions, please feel free to contact us. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!