family sitting at a kitchen table preparing food.

Combination Alarms & Detectors

Double your detection with combination alarms that quickly alert your family to both smoke and carbon monoxide (CO) — an invisible, poisonous gas found in many homes. Choose from battery powered and hardwired detectors, including models with voice alerts. 

Search Results

1 - 12 of 28 Results

New!

Smoke and carbon monoxide alarm (Kidde) mounted flush to a white ceiling, its circular casing and vented sensor openings visible, labeled text and test keyhole shown in a close-up view.

Smoke + CO Alarm, 2 AA Battery Powered

Product ID: 30CUDR-CA

New!

Smoke and carbon monoxide alarm (Kidde) mounted flush to a white ceiling, its circular casing and vented sensor openings visible, labeled text and test keyhole shown in a close-up view.

Smoke + CO Alarm, 2 AA Battery Powered

Product ID: 30CUDR-VCA

New!

Smoke + CO Alarm, 10-Year Battery Powered

Product ID: 30CUD10-CA

New!

A circular Kidde smoke-and-carbon-monoxide alarm shows a lit green indicator light, revealing vent slots and printed instructions while mounted flush against a white ceiling.

Smoke + CO Alarm, 10-Year Battery Powered with Voice Alerts

Product ID: 30CUD10-VCA

New!

Smoke + CO Alarm, Hardwired + AA Backup Battery

Product ID: 30CUAR-VCA

New!

Smoke and carbon monoxide alarm sits mounted, with vents and a central test/keyhole visible while red, black and white wires protrude; photographed close-up against a white ceiling background.

Smoke + CO Alarm, Hardwired with 10-Year Backup Battery and Voice Alerts

Product ID: 30CUA10-VCA

A circular white Kidde smoke and carbon monoxide alarm rests centered on a plain white background, showing a central test button, speaker vents, and a lower battery compartment.

AA Battery Operated Talking Smoke & Carbon Monoxide Alarm with Front-Loading Battery Door

Product ID: KN-COSM-BACA

Round Kidde smoke and carbon monoxide alarm presents a central test/reset button and indicator window with side speaker vents; plastic housing lies photographed flat against a plain white background.

9V Photoelectric Talking Smoke & Carbon Monoxide Alarm with 9 V Front-Loading Battery Door

Product ID: KN-COPE-DCA

Round white Kidde smoke alarm sits flush on a ceiling, sensing air for smoke via vents and a central test button; typical residential indoor safety device for hallways or bedrooms.

10-Year Battery Worry-Free Talking Smoke & Carbon Monoxide Alarm

Product ID: P3010CU-CA

Round white smoke detector centered, featuring a central test button and small speaker grille, appearing stationary against a plain white background, suggesting ceiling-mounted use in a residential interior.

10-Year Battery Operated Wireless Talking Smoke & Carbon Monoxide Alarm

Product ID: P4010DCSCO-W-CA

White stylized house icon sits partially cropped near the lower center, against a smooth pale-gray background, creating a minimalist, high-contrast graphic composition.

AA Battery Operated Wireless Interconnect Talking Smoke & Carbon Monoxide Alarm with Wink App Compatibility

Product ID: KN-COSM-B-RF-CA

A round smoke-and-carbon monoxide alarm displays a central test button and vent slots, with red and black wires protruding from its base, shown detached against a plain white background.

120V AC Talking Smoke & Carbon Monoxide Alarm with 2 AA Front-Loading Battery Backup

Product ID: KN-COSM-IBA-CA