Zigbee Contact Sensor 2 Pack, Mini Smart Door Sensor, Home, Hub Required Product Features Zigbee Standard Compatible Door Sensor: Keep your home safe and smart with the zigbee door sensors, compatible with Alexa, SmartThings and Home Assistant. Conveniently check your door or window, kids room and anywhere you want to be notified Compact Design: No Tools Needed and the mini design sensor won't occupy any extra space. Just make sure the zigbee contact sensor in paring mode, Alexa and SmartThings will automatically discover it Real-time Alert Notification: Get alerts immediately on your Alexa and SmartThings app, you can stay informed about critical alerts concerning your zigbee door sensor, no matter where you are - giving you peace of mind and taking action quickly if needed More Fun With Alexa Routines: Easily create routine triggers with Alexa and SmartThings to control other zigbee devices and OUVOPO contact sensors that the light will turn on when your door is open, making your life easier and more convenient Hands-Free Voice Control: Enjoy the convenience of hands-free access using SmartThings and Alexa - no need to go downstairs or pick up your phone again. You'll always know whether your home door is opening or closing 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!