Brands · Head to head

First Alert vs Sensi

Comparing both brands side by side, ratings, catalog size and every product, so you can see which fits your smart home better.

Updated June 2026
United States flag
First AlertUnited States
3.1/5
Average rating

First Alert is an American home safety brand owned by BRK Brands, specializing in smoke alarms, carbon monoxide detectors, fire extinguishers and combination smoke and CO alarms. Its smart lineup includes Wi-Fi connected smoke and CO alarms that send mobile alerts and work with Google Home, managed through the First Alert app. First Alert focuses on reliable, widely certified fire and CO safety products for the home.

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VS
USA flagHigher rated
4.4/5
Average rating

Sensi, a brand of Emerson, makes smart thermostats focused on easy DIY installation and reliable HVAC control. Its thermostats offer scheduling, remote control and energy-saving features through the Sensi app, with support for Alexa, Google Home and Apple HomeKit on select models. Sensi appeals to homeowners wanting an affordable, easy-to-install smart thermostat.

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Catalogs

Every product, compared

Switch between each brand's full lineup, tap any product for specs, compatibility and pricing.