Photoelectrical/Electrochemical Sensor - Smoke/Fire & Carbon Monoxide Alarm - 10Yr Lithium Battery

SKU: P3010K-CO
Brand: Kidde
Mfr Part Number: 21010071

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The Kidde P3010K-CO is a 10-year, sealed battery, smoke and carbon monoxide alarm that features photoelectric and electrochemical sensing technology with Smart Hush feature. This combination alarm combines the detection capabilities of a photoelectric sensor with that of an electrochemical sensor, which is used to detect CO. When either sensor notices a potential hazard, it will communicate with the other. Depending on what is detected, the alarm will adjust its smoke sensitivity in order to better discriminate between a real hazard and a false one. This constant communication enhances the alarm’s overall performance and significantly reduces the potential for a nuisance alarm.

  • Combination Smoke and Carbon Monoxide Alarm - Smoke and CO sensing technologies work together to detect real fires faster and reduce cooking-related nuisance alarms
  • Sealed-In Lithium Battery - Sealed-in lithium power supply; no battery replacement required over the 10 year life of the alarm. Eliminates worry about battery removal or unauthorized deactivation of alarm
  • Photoelectric Sensor - Smoke alarm contains advanced photoelectric sensor that may detect visible particles (associated with smoldering fires) sooner than ionization alarms
  • Self Activation - Alarm automatically activates when attached to the mounting bracket
  • Alarm Memory - Rapidly flashing LED alerts user if the alarm has sounded since the last time the test/reset button was used
  • Test/Hush Button - Tests alarm circuitry and activates Hush features
  • Smart Hush - Temporarily silences nuisance alarms for approximately 10 minutes and will not allow hush mode unless the unit is in alarm mode
  • LED - Red LED will blink in conjunction with the alarm sound
  • End of Life Warning - Alarm chirps every 30 seconds to indicate the unit is in need of replacement
  • End of Life Hush - End of life indication can be silenced three days at a time up to 30 days to allow for alarm replacement at a more convenient time
  • UL217 and UL2034 Listed
  • 10 Year Limited Warranty

Brochures & Spec Sheets

Electrical & Operational Information

Operating Temperature
40°F - 100°F
Product Type
Smoke Alarm
Wiring Type


Alarm Type
Smoke/Fire, Carbon Monoxide
Color Finish
Housing Material
Humidity Range
10% - 85%
Sensor Technology
Electrochemical, Photoelectric
Sound Level (db)

Warranty & Certifications

Product Warranty
10 Years
UL Listed

Dimensions & Measurements

Product Length (in.)
Product Width (in.)
Product Height (in.)