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What a 1,000 ft baby monitor range means inside a house
Updated
The 1,000 ft on a baby monitor listing is an outdoor number. Infant Optics' product page gives the DXR-8 PRO's range as up to 1,000 feet, line of sight. The Babysense listing says 1,000 ft in open space. The HelloBaby listing says 1,000 ft in an open area and then gives an indoor figure: 190 ft through 7 walls. That is 19 percent of the headline.
- Open-air claim on 4 of the 7 picks1,000 ft
- HelloBaby figure through 7 walls190 ft
What the listings say, side by side
| Model | Range claim | Condition stated |
|---|---|---|
| Infant Optics DXR-8 PRO | Up to 1,000 feet on the maker page. None on the listing | Line of sight |
| VTech VM819 | 1,000 ft in the title | None stated on the listing |
| HelloBaby HB6550 | 1,000 ft, and 190 ft through 7 walls | Open area for the first, a maker test for the second |
| Babysense 5 inch HD Split-Screen | 1,000 ft | Open space |
| VTech VM901 and eufy Baby Monitor E21 | No figure on the listing | Not applicable |
The 190 ft figure is one maker's claim for one model. We have not checked it, and it does not transfer to other brands. It is still useful, because it shows the size of the drop the maker itself expects: about 27 ft per wall in that figure, against 1,000 ft outdoors.
Why walls cut the signal
Radio signals lose power passing through building materials. A NIST laboratory study measured that loss for brick, masonry block, several concrete mixes, glass, plywood, lumber, drywall and reinforced concrete, at a range of thicknesses. The point for a parent is simple. The material and its thickness both count, so three drywall partitions are not the same as three brick walls. That is why the link checker counts heavy walls double. The exact weighting is our estimate, not a NIST figure.
What helps a weak link
- Move the parent unit, not the camera. The camera's place is set by the crib view and by cord safety. The parent unit can sit nearer a doorway or stairwell.
- Raise the antenna if there is one. The DXR-8 PRO listing describes an adjustable external antenna on the camera.
- Use the out-of-range alert. The HelloBaby listing includes an out-of-range alarm, so a lost link makes noise and does not just show a frozen screen.
- Think about hybrid for a large home. If your Wi-Fi already reaches the nursery, the app view on a hybrid rides on your router and is not tied to the direct link's reach. The parent unit still is.
What range does not tell you
A range figure says nothing about picture delay, sound quality or how the monitor copes with a crowded 2.4 GHz band in an apartment block. Owner reports on several picks here mention dropouts. Treat the first week as a trial in your own rooms.
Cord safety: the CPSC says never to place a corded camera within three feet of a crib. See cord safety and camera placement.
Run your own home through the link checker, or compare all 7 picks on the roundup page.