90 Decibel Luxury Door And Window Alarm Window Door Sensor Alarm Anti-Theft Simple Door Sensor.    Features:  -Ideal for home,office,cabinets,drawers & more.  -Magnetic sensor alerts when triggered.  -90dB alarm can be heard throughout the home or office.  -An economical alarm system to protect your loved ones and valuables.  -Prevents burglars from alarming when they open doors or windows.  -Can be used to prevent children from going out, or open dangerous cabinet doors.  -Installation method: magnetic control.    Range of use:  1. Doors, windows, homes, shops, businesses, etc.  2. Internet cafe computer case anti-theft device.    Specifications:  Sensor type:  alarm;  Alarm type: sound;  Material: plastic;  Color: White;    Installation method:   1. Use double-sided tape to fix the host to the door/window.  2. Glue another bar magnet to the door frame in a straight line along the prompt line of the host.  3. When checking the settings, set the host switch to the "ON" position.  4. Open the door and see if the siren sounds from the alarm. You can verify whether the installation is successful.    Note:   1. Please allow 0.5-1cm differences due to manual measurement.   2. Due to the light and screen difference, the item's color may be slightly different from the pictures.     Package Included: 1 x Magnetic Sensor,  1 x Magnetic Stick.