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📬 Stay ahead of your mail game with smart alerts that keep you connected—because waiting is so last decade.
The X-Sense Smart Mailbox Alarm (SMA51) is a sleek, wireless sensor that connects via 2.4 GHz Wi-Fi to the SBS50 base station (sold separately). It delivers instant app notifications when mail arrives, supports multi-user sharing, and offers a powerful 100 dB alert. Designed for all mailbox types with a compact, weatherproof IP65-rated build, it boasts a 4-year battery life and easy, tool-free installation, making it the ultimate smart upgrade for your home’s mail security.
| ASIN | B0CYZKRH49 |
| Audible Noise | 100 db |
| Battery Description | Lithium |
| Best Sellers Rank | #116,089 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #87 in Post-Mount Mailboxes |
| Brand | X-Sense |
| Built-In Media | 1 Smart Mailbox Alarm (Base Station Required) |
| Color | Black |
| Compatible Devices | Smartphone |
| Control Method | App |
| Customer Reviews | 4.3 4.3 out of 5 stars (159) |
| Item Dimensions L x W x H | 3.91"L x 1.06"W x 1.02"H |
| Item Type Name | Mailbox Alarm |
| Manufacturer | X-SENSE |
| Mfr Part Number | X-SENSE |
| Model Number | SMA51 |
| Mounting Type | Wall Mount |
| Number of Batteries | 1 CR2 batteries required. (included) |
| Power Source | Battery Powered |
| Sensor Technology | Infrared Sensor |
| Size | Only 1 Alarm (Base Station Required) |
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