The Reward Points for this product is listed below, Works on all types of mailboxes 300-foot range Easy to install When the weather s poor making that trek out to the mailbox can be an undesirable chore, And since delivery schedules can be unpredictable all too often you may find yourself peeking through that mail slot several times a day, But with the Mail Chime you ll always know instantly when the mail has been delivered, Whether you have a mail slot a curbside box or a wall-mounted mailbox the Mail Chime will ring as soon as the mail arrives even if your home is 300 feet away from your mailbox! Simply mount the sensor on your mailbox door using the included double-face tape and plug the receiver into an electrical outlet anywhere in your home, When the mailbox door is opened the battery-powered sensor (battery included) sends a wireless signal to the Mail Chime which will announce the mail s delivery with a red LED light and four beeps, SKU: HP000