Feature: 1. 【Enjoy Your Smart Life】When you leave home, it will push notification message to you when the door/window opens, so you can discover the intruder in time. 2. 【APP Remote Control】Download app \"eWeLink\" from GooglePlay or App Store to add the device to detect the status of your door/window. Home security in your hand all the time. 3. 【Share Control \u0026 History Records Tracking】You could share the device to your family members and track the history of sensor activities. 4. 【Add \u0026 Creat Scene】Set WIFI door sensor as a trigger, Set your WIFI switch as a action. When the door is opened, the WIFI switch will be open automatically. Similarly, when the door is closed, the WIFI switch turns off automatically. 5. 【Easy to Install】Simply attach one piece to your door or window, and attach the other piece to the door or window frame with double-sided adhesive tape in just a few steps. Specification: Overview: The BT + WIFI door alarm sensor is easy to install and use! It is eWeLink APP remote-control, detecting the opening status and immediately sending alarm notification message to the APP. Leading you to a smart life! Features: 【Enjoy Your Smart Life】When you leave home, it will push notification message to you when the door/window opens, so you can discover the intruder in time. 【APP Remote Control】Download app "eWeLink" from GooglePlay or App Store to add the device to detect the status of your door/window. Home security in your hand all the time. 【Share Control & History Records Tracking】You could share the device to your family members and track the history of sensor activities. 【Add & Creat Scene】Set WIFI door sensor as a trigger, Set your WIFI switch as a action. When the door is opened, the WIFI switch will be open automatically. Similarly, when the door is closed, the WIFI switch turns off automatically. 【Easy to Install】Simply attach one piece to your door or window, and attach the other piece to the door or window frame with double-sided adhesive tape in just a few steps. Specifications: Two Status: Open & Close Wireless: BT + WIFI Power Supply: 2*AAA 1.5V(not included) Standby Current: ≤10μA Alarm Current: ≤160mA Standby Time: 8-10months Alarm Distance: ≥15mm Protocol: IEEE 802.11b/g/n Wireless Type: 2.4GHz APP: eWeLink Material: Superior ABS Operating Temperature: -10℃~ 40℃ Operating Humidity: 20% ~85% Size: Main body (D*W*H): 95*40*20mm Deputy body (D*W*H): 95*13*20mm Package Information: Package Size: Approx. 9.7*5.7*2.9cm / 3.8*2.2*1.1in Package Weight: Approx. 82g / 2.9oz Packing List: 1 * Wireless Door / Window Sensor 1 * Set of Mounting Stickers 1 * User Manual (English) Package List: 1 * Wireless Door / Window Sensor 1 * Set of Mounting Stickers 1 * User Manual (English)