First Alert SMCO410 Smoke Detector & CO Alarm vs Heiman HS1SA Series Smoke Alarm

The Heiman HS1SA Series Smoke Alarm wins overall as the more affordable, better-rated unit with wider integration and a built-in light. But the First Alert SMCO410 Smoke Detector & CO Alarm is the safer device if you need carbon monoxide detection, which the smoke-only Heiman lacks.

Hazard coverage is the biggest difference. The First Alert SMCO410 Smoke Detector & CO Alarm detects both smoke and carbon monoxide, while the Heiman HS1SA Series Smoke Alarm detects smoke only. The Heiman offsets this with a lower price, higher rating and SmartThings and Home Assistant integration.

No. The Heiman HS1SA Series Smoke Alarm is a smoke and fire alarm only, with no CO sensor. The First Alert SMCO410 Smoke Detector & CO Alarm adds a carbon monoxide sensor and CO alerts, covering both hazards from a single unit.

The Heiman HS1SA Series Smoke Alarm connects over Zigbee and needs a hub, working with Samsung SmartThings and Home Assistant. The First Alert SMCO410 Smoke Detector & CO Alarm uses Z-Wave and works with the Ring Base Station and Home Assistant.

Buy the Heiman HS1SA Series Smoke Alarm if you want an affordable, discreet, well-rated Zigbee smoke sensor for SmartThings or Home Assistant with a built-in light, and you do not need carbon monoxide detection in the same device.

Buy the First Alert SMCO410 Smoke Detector & CO Alarm if you want combined smoke and carbon monoxide protection with steam-check, CO and low-battery alerts and a 10-year warranty, and you run a Z-Wave, Ring or Home Assistant setup.