This wireless battery-operated alarm system from Bell & Howell is a must-have for any home security needs. The system comes with everything you need to protect your home, including the alarm itself. The connectivity is easy and convenient, making it simple to install and use. With this SONIC ALARM System, you can rest assured that your home is safe at all times. The compact design and easy-to-use interface make it a perfect addition to any home surveillance system. Whether you're looking to protect your family or keep an eye on your property, this alarm system is the perfect choice.