Smart Door Sensors, 1/4 Mile Worlds Longest Range Wireless Window Door Sensor Work with Alexa IFTTT, Smartphone Monitor APP Alerts Open Reminder Smart Home Security Kit, 4 Packs, YoLink Hub Included

*✅10 times Longer Range - Powered by LoRa technology, YoLink brings the longest receiving range (1/4 mile) in the market. Our long coverage enables its use in hard-to-reach areas such as basement, porch, guest suite, barns, greenhouse, etc.

*✅5 times Longer Battery life - Powered by 2 AAA included Alkaline batteries with 5 years of battery life compared to 1 year of other top brands; Battery status will be updated and low battery alert will be sent within YoLink APP

*✅Work with Alexa - Get voice announcements from Alexa Echo when door open or close; IFTTT Supported - Trigger event pipelines by using IFTTT, such as receiving Notifications, Emails, Calls, etc when the door or window is opened or closed

*✅Instant Notification - Automatically receive mobile notifications when doors or windows are opened or closed; Get a reminder when doors keep open; Check the history of all activities in the app

*✅Home Automation - Build "IF THIS THEN THAT" rules via YoLink APP between YoLink Smart Door Sensor and YoLink Smart Plugs (not included), making life convenient and secure.