The 8pcs Simple Anti-theft Door And Window Alarm is a wireless security alarm designed to protect your home or office from intruders. It can be easily mounted on any window or door using adhesive tape, making installation quick and hassle-free. The magnetic sensor switch detects any entry, whether you are inside or outside, ensuring the safety of your property. For added security, a warning door/window sticker is included in the package. This serves as a deterrent to potential intruders, letting them know that your property is protected. The alarm operates using 2x AAA batteries (not included), making it convenient and easy to use. To install the alarm, simply open the battery cover and insert the batteries correctly. Then, fix the main unit with the on-off switch to the side of the door or window. Attach the bar magnet to the door frame or window frame, aligning it with the reference line of the main unit. Switch the main unit to the 'ON' position to activate the alarm. If the magnetic sensor is separated from the alarm device when someone opens the door or window, it will emit a 90bp alarm sound. When not in use, remember to turn off the switch to conserve battery life. If the alarm will be set aside for a long time, it is recommended to remove the batteries to prolong their lifetime. Ensure the safety of your home or office with the Door Window Wireless Burglar Alarm. This wireless security system provides peace of mind and protection against intruders. Package includes 1 alarm unit and 1 magnetic sensor. Key Features: Easily mounted on windows or doors Magnetic sensor detects entry Includes warning door/window sticker Operates using 2x AAA batteries Quick and hassle-free installation Provides peace of mind and protection Includes 1 alarm unit and 1 magnetic sensor Convenient and easy to use