Smart Garage Door Sensor, Yolink 1/4 Mile World'S Longest Range Wireless Garage YoLink Technology ?YoLink? is a proprietary wireless technology provided by YoSmart. which is based on the Semtech?s LoRa wireless technology combined with the YoSmart smart home/building protocol, to provide the most advanced smart home/building devices solution. Compared to WIFI, Bluetooth, ZigBee, Z-Wave, and other smart home protocols, it has the advantages of low-power consumption, long-distance coverage (wall penetration), and anti-interference. It is the first smart building/home protocol that can be very easily set up and is a very low cost but creates a reliable, robust, and more secure IoT network. Requirements: 1. A YoLink Hub (not included, ASIN: B07TQLKQLJ) 2. A smartphone or tablet able to run iOS 9 or higher, Android 4.4 or higher Introduction: YoLink Garage Door Sensor 2 can detect opening and closing of your garage door and send alert or trigger action. Specifications: Name: Garage Door Sensor 2 Model: YS7706-UC Button: Set Button Voltage: 3V DC (2* AAA battery) Working Temperature: 0C~40C (32F~104F) Working Humidity: 10%~90% (non-condensing) Package Content: 1 x YoLink Garage Door Sensor 2 1 x Quick Start Guide World's Longest Wireless Range: Powered by LoRa technology, the long-range yet low-power system offers the industry?s longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property. Early-Warning Notifications: Receive real-time early-warning notifications in the form of smartphone banner alerts, SMS/text messages and emails, each optional and configured per your needs. Additionally, you may configure your system to activate a siren alarm and/or lights in your home. Low-Power Means Longer Battery Life: Because of the low power consumption, device batteries may last 5 years or more (depending on application and device usage/activity), on standard AAA Alkaline batteries (lithium batteries not required)! From Simple to Super-Smart: After setting up your notification preferences, keep it simple and let the YoLink system do the rest and monitor your home and property for you. Or, utilize available advanced automation features, including 3rd-party integration with Alexa and IFTTT, to interact with other YoLink and 3rd-party smart devices. Limited only by your imagination! YoLink Hub Required but not included: YoLink Hub is the only central controller for YoLink devices, and it connects YoLink devices into the internet and the cloud. Without YoLink Hub, this sensor does not work with YoLink APP and does not support 3rd-party integration with Alexa and IFTTT . Please search B07TQLKQLJ for the hub or try our Smart Home Starter kit B07V246GCX