First Alert SMCO410 Smoke Detector & CO Alarm vs Heiman Smart CO Alarm

The Heiman Smart CO Alarm wins overall on price, owner rating and a much wider integrations reach through Matter over Thread. The First Alert SMCO410 Smoke Detector & CO Alarm still detects more hazards and sends more alert types.

Hazard coverage and connectivity protocol. The First Alert SMCO410 Smoke Detector & CO Alarm detects smoke and carbon monoxide over Z-Wave, while the Heiman Smart CO Alarm detects carbon monoxide only, connecting through Matter over Thread to reach far more smart home platforms.

The Heiman Smart CO Alarm, via Matter over Thread, reaches Google Home, Alexa, Apple HomeKit, Samsung SmartThings and Home Assistant. The First Alert SMCO410 Smoke Detector & CO Alarm integrates only with Home Assistant over Z-Wave, plus Ring Alarm notifications.

Yes, the First Alert SMCO410 Smoke Detector & CO Alarm includes steam-check technology to distinguish cooking smoke from a real fire. The Heiman Smart CO Alarm has no steam-check feature, though it is a CO-only device that would not trigger on cooking smoke in the first place.

Households that need one unit covering both smoke and carbon monoxide, and that already run a Z-Wave hub or a Ring Alarm system with the Smoke and CO Listener.

Buyers who only need standalone carbon monoxide monitoring and want it to appear across Google Home, Alexa, Apple HomeKit or Samsung SmartThings through a Thread border router.