【WIFI wireless connection】Intelligent wireless infrared sensor alarm,APP Remote Control. It can be used independently by connecting to WIFI without connecting to the alarm main unit. You don't have to worry about your baby going out of house.
【Wide compatibility】No hub required and No fees charge. Pair our app with either Alexa or Google Home. so convenient for you to detect the status of your doors, windows, cabinets, drawers or anywhere you want to notified when it is opened or closed.
【Low Power warning】 The sensor door need with TWO AA Batteries(not include).When the battery level is low, it will automatically push messages throuch APP to remind you to change battery.
【Easy Installation】The two arrows are opposite,the distance between the two compopents should be as close as possible,and the closest distance should not affect the opening/clsoing of the door or window.
【Multiple Uses】Because the alarm sensor notifies your phone when you turn it on/off, you not only on front doors or windows, but also on garage doors, liquor cabinets, front gate, safety deposit box, pet doors and more.