Feature:1. This wireless vibration alarm detector supports low power prompt and other functions, and the sensor is very sensitive, which can well meet your needs.2. After sensing the vibration, it will immediately send out an alarm signal to the alarm host, and the host will immediately send text messages to call you so that you can respond quickly.3. This wireless alarm detector is made of high quality ABS material, which has a long service life and has the stable performance to ensure the normal operation for you.4. Equipped with a tamper evident button. When the detector is violently removed, the button will be triggered to notify you remotely.5. It can be applied to various scenes such as doors and windows, drawers, safes and so on, which can be used in many scenes of life .Specification:Item Type: Alarm DetectorMaterial: ABSUses: Various Scenes Such As Doors and Windows, Drawers, Safes, Etc.Battery: 1.5V 2 x AAA Battery (without Battery)Transmission Frequency: 433MHZLaunch Distance:Appeox. 60m / 196.9ftWorking Temperature: -10-55.Package List:1 x Alarm Detector 2 x Screw1 x StickerNote:Battery mentioned above is not included in our list.