The YardGard Gate and Window Alarm is an effective and affordable warning system that features a loud 120 dB alarm to alert you of unauthorized access and activity. It has a battery-operated, water-resistant design that is ideal for inside or outside installation, making it the ideal pool alarm to keep your family safe. It adds an effective layer of protection against children wandering into your pool area unsupervised. The loud alarm goes off immediately when triggered, but also features a convenient one-touch bypass that allows quiet, authorized access at any time. This YardGard alarm system is ETL certified to UL 2017, meeting the national standard for a residential water hazard barrier alarm. Plus, with all of the mounting hardware included, its easy to install this gate alarm on wooden and metal gates, sliding glass doors, or on windows.