Wireless Door Window Sensor With Wifi And Free Notification Via An App, Pack). Product Features [Multiple Uses] Install the Alarm Sensor not only on front doors or windows, but also on garage doors, liquor cabinets, front gate, safety deposit box, pet doors and more. [Easy Install] No complicated installation tools are required. Please scroll down find the video in the main page how to add sensor to WIFI and Alexa.Low power consumption door sensor, super-long battery life avoid replacement frequently [Compatible with Alexa and Google Home] No hub required and No fees charge. Pair our Smartlife app with either Alexa or Google Home and enjoy knowing the status of your door sensor without needing to use your phone. Convenient for you to detect your doors, windows, cabinets, drawers or anywhere you want to notified when it is opened or closed. [WIFI wireless connection] Intelligent wireless infrared sensor alarm,APP Remote Control.Use Tuya APP for free,it can be used independently by connecting to WIFI without connecting to the alarm main unit.Minimalist screen,easy operation, Real-time monitoring of whether there is anyone through the Tuya APP, when there is movement detected, the alert will be push to your phone,clear at a glance. Can be used with Alexa, Google Home and Siri. [Product quality and service] Our products are 100% tested and ensure that all products are qualified products before leaving the factory,and provide two-year warranty. Please rest assured to purchase and use.If you have any questions about the alarm system, please contact our customer - service anytime. We will solve it for you and make you satisfaction. 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!