X-Sense SMA51 Smart Mailbox Alarm (Base Station Not Included) for $15 w/ Prime + free shipping w/ Prime

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This X-Sense mailbox alarm is at its lowest recorded price on Amazon, down from $19.99. It sends a push alert to your phone the moment mail arrives and runs on a battery rated for up to 4 years of use. Keep in mind the SBS50 base station needed to connect it to the app is sold separately. Buy Now at Amazon Features Sends instant phone alerts via app when mail arrives Requires SBS50 base station, sold separately, which connects up to 50 X-Sense devices Works over 2.4 GHz Wi-Fi only Battery life o

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