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RF-433 KaKu

TIP: Find out when the post man has came to drop some mail

SneeuwvosSneeuwvos Unconfirmed, Member
Hi guys,

I found myself a little life-hack: I attached a 433mhz kaku door sensor on my mailbox outside, so each time the mail man comes I get a notification on my phone he put in some mail.

This avoids me checking my mailbox every day, even though there might be no mail.


  • And let the Sonos speakers yell the mailman did put something in? And a counter. When u ask if there was mail they yell that the mailbox opened 3 times today. Reset the counter at 00.00 hours.
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