Cảm biến SONOFF DW2 Wifi cảnh báo cửa sổ không dây báo động chống trộm

Features: * Work Without Gateway Connection: No gateway required. The sensor is paired with APP eWelink via BT and is controlled on APP eWelink via Wi-Fi. * Status Sync History Records: Worry about leaving your door or window open/closed? You can view instantly the status of home on APP. You can check history records over the last 3 months. * Know Whether Home is Safe: The sensor will send you a notification immediately if someone is detected to open your door or window. * Can See Who Come into Home: Add SONOFF Camera or an unused smartphone, and you can view what's going on in your home not just receive the alert notification when the door is open. * Made Smart in the Action: Want the hallway to light up when you walk into the door and light off when you walk out the door? Simply connect the SONOFF switch or SONOFF light to the sensor and go. * Low-battery Reminder: There is a reminder on APP if the battery level of the sensor is low. Specifications:Battery model: AAA 1.5VWorking voltage: DC3V 21.5 battery (not included)Quiescent current: 40uAEmission current: 15mAWi-fi: IEEE 802.11 b 2.4GHzOperating systems: (Android 4.1 iOS 9.0 or higher)Installation gap:＜5mmWorking temperature: -10C~40CMaterial: PC Package Information:Package Size: Approx. 9.5*5.6*3cm/3.7*2.2*1.18inPackage Weight: Approx. 45g/1.59oz Packing List:1 * Sonoff DW2 Sensor(batteries not included)Giá sản phẩm trên Tiki đã bao gồm thuế theo luật hiện hành. Bên cạnh đó, tuỳ vào loại sản phẩm, hình thức và địa chỉ giao hàng mà có thể phát sinh thêm chi phí khác như phí vận chuyển, phụ phí hàng cồng kềnh, thuế nhập khẩu (đối với đơn hàng giao từ nước ngoài có giá trị trên 1 triệu đồng).....