Mail Chime Mail Alert Wireless Mailbox Notification System

No more wasted trips to the mailbox! The Wireless Mail Alert System consists of a wireless sensor and a plug-in receiver that work together to notify you when your mailbox has been opened. Simply affix the sensor to your mailbox lid with the included adhesive tape and place the receiver inside your home up to 350 ft. away. Works on all curbside wall-mounted and slot mailboxes.