Review on Wireless Mailbox Alert - Mailbox Alarm, Briidea with 500ft Range, LED Light Flashing, and Sound Reminders by Rey High

Easy to install. Place the transmitter in the door of the mailbox, plug the receiver into an outlet in your house. The red light will flash and the alarm will sound (about 10 or 12 times when the mailbox door opens. Check your mail when the alarm sounds. We don't get our mail at the same time every day. This product saves me a lot of trips to mine Mailbox. I highly recommend it if your mailbox is far away! Note: One of the most important features is that the light keeps flashing after the alarm goes off. That's cool because even if you don't hear the alarm, you're everything, what else you can see, the light is blinking!