YoLink Smart Garage Door Sensor, 1/4 Mile World's Longest Range Wireless Garage Door Sensor Works with Alexa, Home Assistant

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 (included)2. A smartphone or tablet able to run iOS 9 or higher, Android 4.4 or higher