[Instant Alerts and LED,Music Notification]: When the mailbox Notification system is opened, the receiver immediately emits a sound and lights up a LED, which continues to flash the stop button. You can also choose from three different mail alert tones to suit your personal preference for a more customized experience [Upgraded Mailbox Chime Alert]: Our newly designed mailbox sensor allows you and your family to avoid frequent trips to check mail during cold winter nights, reducing inconvenience and risk. saving time and making life more convenient. Additionally, mailbox alert anti-theft feature protects your mail securely. [Enhanced Coverage and Expandable Pairing]: Mail alert receivers can operate up to 800 feet in an unobstructed area, ensuring you never miss a mailbox alert. It also supports pairing with multiple transmitters, suitable for homes and offices with multiple mailing points [Easy Installation]: The mailbox alarm is battery-powered and wire-free for easy installation. It is compatible with various mailbox types including standard, wall-mounted, and slot mailboxes, allowing you to easily adjust settings based on your mailbox type, Weight: 0.65477291814 Pounds, Manufacturer: Uxsjakjsd