HearthwireSmart home kit decided by numbers

Independent buying guides

Pick smart home devices that still work when the hub changes

For Canadian homes adding connected lights, locks and sensors one device at a time. Every guide answers one question, shows the sourced figures and check dates it relied on, and shows the working inside its calculators.

Guides published
3Each one answers a single buying question.
Calculators
3Formula, units and assumptions shown on the page.
Sources cited
11Each with the date the link was checked.
Photographs
10Free-licence images, photographer credited.

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A white institutional door signed Interview Room beside a metal staircase, two people standing by it
A plain institutional corridor door with a mechanical closer, inside a public building. Photo: Jacklee · CC BY-SA 3.0 · Wikimedia Commons

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Each guide answers one buying question and shows the figures behind the answer.

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How this site works

Every figure in a guide is taken from a named source, with the date it was checked. Where a number is an assumption or an example, it says so in the same sentence.

We do not run paid product tests, we do not publish reader reviews, and we do not claim to have handled every product mentioned. Where a claim needs a lab or a long-term test we do not have, the guide says that plainly.

Photographs are free-licence images from Wikimedia Commons or Openverse, credited to the photographer with the licence named. Charts are drawn from the figures printed in the same guide.

This site earns money from advertising and, where disclosed, from affiliate links. That does not change the order of a comparison or the conclusion of a guide.

Some links on this site can earn us a commission. That does not change which product a guide recommends, and it adds nothing to your price. Advertising is not enabled on this site yet. When it is, ads will be labelled and kept visually separate from the guides.

Smart lock cylinder with fingerprint-reader keypad, three RFID key cards and a phone app, on white
A retrofit smart cylinder usually offers several ways in at once: fingerprint, PIN, key card and phone app.Photo: Unknown authorUnknown author · CC0 · Wikimedia Commons · Open source page

Calculators

Each calculator shows its formula, units and assumptions. Nothing is estimated for you in secret.