Family prepares dinner with a Kidde combination smoke and carbon monoxide detector/alarm above them.

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.

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New!
Round Kidde smoke-and-carbon-monoxide alarm displays a green status LED, features ventilation slots on both sides, and shows exposed red/black wiring against a plain white ceiling background.

Smoke + CO Alarm, Wire-Free Interconnect, Hardwired with AA Backup Battery

Product ID: 30CUAR-VRF
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New!
A Kidde smoke-and-carbon-monoxide alarm sits mounted to a ceiling, its circular white housing and ventilation slats visible while a small green LED indicates normal operation.

Combo Smoke + CO Alarm, Wire-Free Interconnect, AA Battery Powered

Product ID: 30CUDR-VRF
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SMART
A round Kidde smoke and carbon monoxide alarm transmits an alert; a smartphone beside it displays a Ring notification reading "Smoke Detected at Home" against a plain white background.

Ring Smart Smoke + CO Alarm, Hardwired with 2 AA Backup Battery

Product ID: RGCUAR-RW
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New!
White Kidde smoke-and-carbon-monoxide alarm sits beside a smartphone showing a red "Bedroom has detected carbon monoxide" alert, photographed close-up against a plain white background.

Smart Smoke + CO Alarm, Hardwired with AA Backup Battery

Product ID: 30CUAR-W
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Hardwired with AA Backup Battery

Smart Combo Smoke + CO Alarm

This smart alarm offers cutting edge technology that sends fast alerts to give your family more time to get out safely.

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The 30cuar-w product next to a smart phone showing the Kidde App
New!
Smoke and carbon monoxide alarm (Kidde) shows a green LED; circular white housing with ventilation slots mounted on a ceiling-like surface against a dark background.

Smoke + CO Alarm, 2 AA Battery Powered

Product ID: 30CUDR
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New!
Smoke and carbon monoxide alarm (Kidde) shows a green LED; circular white housing with ventilation slots mounted on a ceiling-like surface against a dark background.

Smoke + CO Alarm, 2 AA Battery Powered

Product ID: 30CUDR-V
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New!
A round Kidde smoke-and-carbon-monoxide alarm displays a green indicator light while mounted; ventilation slots and red/black wires are visible against a black background.

Smoke + CO Alarm, Hardwired + AA Backup Battery

Product ID: 30CUAR
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New!
A round Kidde smoke-and-carbon-monoxide alarm displays a green indicator light while mounted; ventilation slots and red/black wires are visible against a black background.

Smoke + CO Alarm, Hardwired + AA Backup Battery

Product ID: 30CUAR-V
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New!
A round Kidde smoke-and-carbon-monoxide alarm mounted on a ceiling, showing ventilation slots, a central test/hush button and printed status labels against a plain white background.

Smoke + CO Alarm, 10-Year Battery Powered

Product ID: 30CUD10
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New!
Kidde smoke-and-carbon-monoxide alarm displays a steady green LED, indicating normal operation, with vent grilles on either side and a white circular housing mounted flush to a flat white ceiling.

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

Product ID: 30CUD10-V
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New!
Round Kidde smoke and carbon monoxide alarm displaying a green status LED, with exposed red/black wiring at the edge, viewed front-on against a dark background.

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

Product ID: 30CUA10
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