This $36 Smoke and Carbon Monoxide Detector Creates Its Own Wireless Safety Mesh

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You should have a smoke and carbon monoxide detector on every level of your house, and in every bedroom, and this First Alert combines both into a single product for just $36, the best price since last summer. Do a mental audit of where all of your detectors are, and take advantage of this deal to fill in any gaps.

Most impressively of all, while it’s not truly a “smart” alarm like a Nest Protect, it does connect wirelessly. Plus, it can send mobile alerts and emails so you’re aware of danger whether you’re home or not.