["Description:\nbrand new and high quality\nFeature:\nHigh sensitivity, Low power consumption, Real-time monitoring.\nWiFi connection (for Smart Life APP) smoke detector, Live strobe and sound alarm notification.\nAPP push, for smart phone remote monitoring, Monitoring center push.\nEasy and simple to successfully connected to WiFi. \nEnergy-saving battery, can be used for a long for time.\nLow battery alert, when the battery is too low, the smoke detector will make an alarm to remind you to replace it.\nEasy and simple to install with screws or stickers.\nThis WiFi Smoke Detector Use for Factory, Warehouse, Hotel, Home, Bank, Market, School, Company, Cinema.\n\nSpecifications:\nItem Type: Smoke Detector\nMaterial: ABS\nSize: diameter: 107mm/4.2in, height: 45mm/1.7in\nColor: White\nQuantity: 1 PC\n\nNote:\nTransition: 1cm=10mm=0.39inch\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Includes:\n1 x Smoke Detector\n1 x Battery\n2 x Mounting Bracket\n2 x Screws\n1 x User Manual"]