Wifi Door Sensor With Alarm Light, Door Alarm 120Db When Opened,, 2 Pack Product Features ?Door Sensor that Alerts Your Phone?When door/window is opened , door alarm emits 120dB alarm to deter thieves and flashes red light to attract attention, then sensor will push instant alarm notification to your smartphone. ?Advanced System?The contact sensor comes with a setup button, one button switch mode arm/disarm, 4 volume options. No need for extra remote control, Smart Life APP supports all settings, including volume switching, alarm time setting, on/off button, low battery reminder, timer setting and more smart options. ?Home Smart Linkage? Smart door sensor is programmable with other Tuya Smart Life Devices. To turn on / off your smart home devices automatically by connecting the smart window door sensor with your other smart home devices. For example, your home will be lighted on automatically when you open the door as you get home from work. ?AAA Battery Powered?eMylo window sensors are AAA battery-powered for a long-lasting performance. It is used to detect whether doors, windows, drawers and so on are opened or moved in your absence. When the battery is running out, you will receive an App notification. AAA batteries not included in the box. ?Easy Installation? No tools required. Comes with adhesive tape. Install anywhere using adhesive tape. You can install the door sensor on front doors, garage doors, liquor cabinets, safety deposit box, pet doors and more. Please note that the door magnet is installed at a distance of no more than 0.7cm. 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!