The 90 Decibel White Battery Operated Window and Door Alarm provides a straightforward security solution for homes. The alarm measures 1.5" x 2.5". Powered by three Alkaline LR44 batteries, it requires no wiring or electrical work, allowing for flexible placement. The alarm emits a loud 90-decibel alert to signal any unauthorized entry. Easy-to-follow instructions are provided on the back of the packaging, ensuring a hassle-free installation process. Comes blister-packed on a hanging card. The packaging measures approximately 3.75" x 5.5". ,90 Decibel Battery Operated Window and Door Alarm,