Letterbox sensor enables you to get notifications about new mail in your letterbox, mailbox, postbox or even post office box (PO BOX). Just install sensor inside your letterbox and get instant notifications by email or SMS.
With our cloud based application you can easily visualize, set notification tagrets, and see letterbox history.
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Not certified yet
Letterbox occupancy, notification about new mail, and mailbox emptying.
EXW – Ex Works
Dedicated - Internal
Flashable Firmware: No
No connector for an additional external antenna