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SinMan App Smart Mailbox Alert System

So you would like to get notified as soon as there is activity in your mailbox? The SinMan Mailbox Chime & Alert System has you covered. It has a range of 150 feet and sends you instant notification when you have mail. It can be installed on mailboxes of all sizes and shapes.

More gadgets like this πŸ‘‰πŸ‘‰ here

The mailFi sensor has a range of 150 feet but you can extend that with a repeater. More info is available here.

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