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First Alert SCO501CN-3ST Onelink Combination Smoke Alarm And Carbon Monoxide Detector

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ONELINK Battery-Operated Combination Smoke & Carbon Monoxide Alarm with Voice Location

Learn more about the First Alert SCO501CN-3ST


First Alert
Smoke / Carbon Monoxide Alarm


Sensor: Photoelectric, Electrochemical

Color: white

Battery backup: AA
wireless interconnectivity of smoke and CO alarms

talking alarm

dual smoke & CO sensing

photoelectric smoke sensing alarm


mute button

EZ access battery drawer

low battery power signal mute

electrochemical CO sensor

end of detector life timer

2 AA batteries included

loud 85db alarm plus talking alarm for added safety

meets UL217 & UL2034 standards for combination CO and smoke alarms

FCC compliant for wireless device standards

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

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