Heiman HS1SA Series Smoke Alarm vs Kidde Smart Smoke & CO Detector with Ring

Kidde Smart Smoke & CO Detector with Ring, because it detects carbon monoxide as well as smoke, needs no hub, sends free Ring app alerts and reduces cooking false alarms. Heiman HS1SA Series Smoke Alarm wins on price, on SmartThings and Home Assistant integration and on its built-in light.

No. Heiman HS1SA Series Smoke Alarm is a smoke-only device with no CO sensor and no CO alerts. Kidde Smart Smoke & CO Detector with Ring combines photoelectric smoke detection with an electrochemical CO sensor, including low-level CO alerts sent to the app.

Heiman HS1SA Series Smoke Alarm does: it is a Zigbee device that needs a compatible hub for alerts and automations, though its siren works standalone. Kidde Smart Smoke & CO Detector with Ring connects to 2.4 GHz Wi-Fi on its own and also interconnects wirelessly with other Kidde alarms.

Both carry a built-in siren, and Heiman HS1SA Series Smoke Alarm is rated above 85 dB, which owners repeatedly describe as much louder than its 60 mm body suggests. Kidde Smart Smoke & CO Detector with Ring also has a built-in siren and adds spoken app notifications for smoke, CO and low battery.

Heiman HS1SA Series Smoke Alarm uses a DC3V cell rated for ten years with low-battery alerts, though some owners report shorter real-world life and difficulty sourcing the exact cell. Kidde Smart Smoke & CO Detector with Ring uses two included AA batteries, warns in the app rather than chirping, and filters cooking steam.

Owners of a Zigbee hub who want cheap, discreet smoke sensors in several rooms, integrated with SmartThings or Home Assistant so smoke can trigger lights and notifications. If carbon monoxide coverage or hub-free operation matters, Kidde Smart Smoke & CO Detector with Ring is the better purchase.