“YoLink” is a proprietary wireless technology provided by YoSmart. which is based on 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 (sold separately, used to connect YoLink Outdoor Motion Sensor to the internet and the Cloud). 2. A smartphone or tablet running iOS 9.0 or higher, Android 4.4 or higher. Specifications: Voltage: 3V DC (2-Lithium Non-rechargeable AA Batteries) Device Current Draw: ≤135mA(operating), ≤20uA(stand by) Coverage Angle: 80° (Horizontal), 20° (Vercal) Optimal Installation Away From Detection Area: 0 – 20 feet (0 – 6 meters) IP Rating: IP67 Environment:Temperature: -4°F – 122°F (-20°C – 50°C) Humidity: ≤ 95% non-condensing Package List: 1 x Outdoor Motion Sensor 1 x Quick Start Guide 4 x M4 Wall Screws