Walking out to check an empty letterbox, then missing the delivery that actually mattered, is a small daily annoyance with a simple fix. The X-Sense mailbox alarm is a wireless sensor that sits inside the box and a receiver that sits inside the house: the moment the lid opens, the receiver chimes. You go out once, when there is something to collect.
It works without WiFi
The sensor talks straight to the receiver on its own radio link — no router, no app, no account, and nothing to reconfigure when the internet drops or the ISP swaps your box. That also means it keeps working through a power cut, which is the point at which most “smart” home gadgets go quiet.
Range that reaches the gate
Up to around 150 metres of open-air range between sensor and receiver, so the box can be at the main gate, at the bottom of a drive or in a shared entrance and the chime still reaches a room upstairs.
Not just for post
It is an open-detection sensor with a chime, so it does the same job anywhere something should not open unnoticed — a side gate, a store room, a shed, a back door, a cabinet. Many people buy it for the letterbox and end up moving it to the gate.
Fits in a few minutes
Adhesive pads or screws, your choice, with no wiring and nothing drilled through the box. Low-power design means the battery lasts a long stretch rather than needing attention every few weeks.
- Instant chime the moment the mailbox or door opens
- Direct wireless link — no WiFi, router, app or account needed
- Around 150 m open-air range to the receiver
- Receiver included in the box
- Adhesive or screw mounting, fitted in minutes
- Low-power design for long battery life
- Works equally well on a gate, shed, store room or back door
This is the exact unit filmed for the review above, inspected before listing — which is why it is half the price of a new one. Watch the review to hear how loud the chime actually is, then fit it on whatever you are tired of checking.
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