Feature: 1. APP Control: This door alarm sensor supports WiFi connection and APP control, which allows you to disarm or arm the window alarm sensor on your app remotely, also you can set timed arming or disarming as your need(APP is suitable for IOS or for Android). 2. Adjustable Time Delay and Alarm Volume: The time delay and alarm volume of this WiFi door window sensor can be easily adjusted according to your needs and different environment. When the door or window is opened, the WiFi door alarm sensor will make a 110DB sound alarm and push a real time notification to your app. You can check the alarm History on your app. 3. AAA Battery Powered: This WiFi door alarm system is powered by 2 AAA batteries(battery not included). When the battery is running low, it will automatically push messages through APP to remind you to change battery. 4. Easy Installation: This wireless door alarm can be easily installed without tools and complicated steps. Easily setup WiFi window alarms for home in minutes, just use double sided adhesive tape to install, firm and durable. 5. Wide Application: This wireless door window sensor is suitable for front doors or window, garage doors, liquor cabinets, front gate, safety deposit box, pet doors and more. Specification: Item Type: Door Alarm Sensor Material: ABS Battery: 2 x AAA Batteries (Battery Not Included) Standby Current: ≤180μA Alarm Current: ≤70mA Arming or Disarming: Light Flashes Twice When Disarming, It Gives a Sound When Arming Alarm Transmission Mode: WiFi Transmission; Alarm Output: Open Door Alarm, Close Door Alarm Sensor Size: Approx. 90.5 x 37.5 x 21.5mm / 3.6 x 1.5 x 0.8in ( Manual Measurement, Slight Error May Exist ) Magnetic Stripe Size: Approx. 57.5 x 17.5 x 17mm / 2.3 x 0.7 x 0.7in ( Manual Measurement, Slight Error May Exist ). Package List: 1 x Door Alarm Sensor1 x Magnetic Stripe2 x Double Sided Adhesive Tape1 x User Manual