Siren Alarm YoLink 1 4 Mile World s Longest Range Smart Siren Alarm Work with Alexa Google Assistant IFTTT Smartphone Remote Control Smart Home Security System YoLink Hub Required

"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 setup and is a very low cost but creates a reliable, robust, and more secure IoT network. Requirements: 1. A YoLink Hub (sold separately, used for connecting YoLink Siren Alarm to the internet and YoLink Cloud). 2. A smartphone or tablet running iOS 9.0 or higher, Android 4.4 or higher. 3. 2*AA batteries (sold separately) if you want to power the device by the battery. Specifications: Voltage: DC 5V/1A (Micro USB) / DC 3V (2-AA Battery, sold separately) Alarm Volume: H(high): 110db M(medium): 104db L(low): 100db Working Temperature: 0°C~50°C (32°F~122°F) Working Humidity: 0%~95% non-condensing Package List: 1 x Siren Alarm 1 x AC/DC Adapter 1 x USB Cable 1 x Quick Start Guide