**Upgraded Mailbox Alert:** Our new mailbox sensor helps you avoid unnecessary trips to check mail, especially in cold weather, saving time and enhancing convenience. It also includes an anti-theft feature for added security. **Wide Range & Multi-Pairing:** The receiver works up to 800 feet in open areas and can pair with multiple transmitters, ideal for homes or offices with multiple mailboxes. **Instant Notifications:** When the mailbox opens, the receiver plays a sound and flashes a blue LED (press to stop). Choose from three alert tones for a personalized experience. **Simple Setup:** Battery-powered and wireless, it fits most mailbox types (standard, wall-mounted, slot) for easy installation. **Color:** White **Material:** Plastic **Package Includes:** 1 x Mailbox Alarm *Note: Slight color variations may occur due to lighting or screen differences. Size tolerance: +/- 1-3cm.* Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store