The wireless mailbox alert can be used with any mailbox that has either a top or bottom hinge. The sensor is placed on the mailbox door and adjusted with a swivel sensor. When the mailbox is opened it will send a signal back to the receiver up to 1000 feet away. The sensor includes one 23A, 12 volt battery.
|What's in the box||(1) DC-1000 Receiver (1) MBA-1000 Mailbox Alert|