Kidde KN-COPE-I Carbon Monoxide & Smoke Detector, 120V Photoelectric Hardwired Talking w/Battery Backup (21007624)

Brand: Kidde
Model: KN-COPE-I
Condition: New
Warranty: 7 Years
SKU: 126154
5 (2 Reviews)
In Stock

Kidde KN-COPE-I Combo Smoke Alarm

Our Price: $46.06
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The Kidde KN-COPE-I (21007624) combo smoke and carbon monoxide alarm is a state of the art voice warning smoke detector with battery backup. Designed with photoelectric sensors for detecting smoke and fire as well as electrochemical sensors for detecting deadly carbon monoxide, this combination smoke alarm protects your family with unmistakable, innovative voice warning alarms that clearly announce the type of danger. Temperature and relative humidity durability and a quick connect plug with 8" pigtails rounds out the Kidde KN-COPE-I smoke and carbon monoxide alarm as a must-have for your home.

The Kidde KN-COPE-I smoke and carbon monoxide alarm is a 120VAC wired device, with included 9V backup battery to protect your family at all times, even during power outages. With a battery that loads in the front for lightning-fast installation and replacement, and the ability to connect with up to 24 other devices, the Kidde KN-COPE-I is a powerhouse protection device for your home. The Kidde KN-COPE-I is UL listed and comes with a seven-year limited warranty.

Fire Voice Warning:

The red LED flashes with alarm beeps followed by a verbal warning message FIRE! FIRE!  The smoke alarm will repeats this function until the KN-COPE-I is reset or smoke is eliminated. Note: Abnormal levels of smoke detected since its last test, will produce three rapid beeps. Carbon Monoxide Warning:  Four (4) short alarm beeps followed by a voice warning of WARNING! CARBON MONOXIDE!” This function continues until the alarm is reset or the carbon monoxide is eliminated. Upon the reset button pressed the KN-COPE-I will announce CO PREVIOUSLY DETECTED.

Low Battery Warning:  One chirp occurs with the voice warning “LOW BATTERY”. The red LED light flashes and continues every minute for the 1st hour. After the first hour, the red LED light will flash once a minute accompanied by the chirp sound. The LOW BATTERY warning will then sound once every fifteen minutes. 

Voice Hush Announcement:


  • 85 Decibel Voice Warning states the Danger Type
  • Warns of CO Concentrations of 100ppm or Higher
  • Smart Hush™ Silences False Alarms
  • LED Indicators For Alarm Sounding and Unit Activation
  • Low Battery Signal with Chirp Sound Every 30 Seconds
  • Tamper/Theft Resistant
  • Photoelectric Smoke Alarm
  • Front Loading Battery Design
  • A/C Wired With Battery Backup
  • Part Number: 21007624
  • 9V battery backup
  • Audio Alarm: 85dB at 10ft
  • CO Sensor: Electrochemical
  • Humidity Range: 5%-95% relative humidity
  • Interconnects: Up to 24 Kidde devices (of which 18 can be initiating)
  • Power Source: 120VAC, 60Hz 25mA max per alarm
  • Size: 5.79" in diameter x 1.85" depth
  • Smoke Sensor: Photoelectric
  • Temperature Range: 40°F (4.4°C) to 100°F (37.8°C)
  • Warranty: 7 year limited
  • Weight: 1lb
  • Wiring: Quick connect plug with 8" pigtails
7-year limited warranty through KIdde
Customer Reviews

Mine were already tested in a real incident.

I installed six of these two days ago. Yesterday got a call from my wife telling me they had been awake by the carbon monoxide alert. The car was running in the garage, probably because of the remote been pressed by something in her bag. The voice alert for CO sounded in all rooms; she took the kids outside and opened all doors and windows. I would definitively recommend this alarm.


on 03-22-2012 by GtMorris

Easy to install; works great

Replaced my smoke detectors with these units; easy to install; like the fact I can turn it off for a false alarm like when cleaning the oven which produces some smoke. I feel safer knowing it detects both smoke and carbon monoxide. Being able to change the battery on the outside is better too. Mounting it to the ceiling is also easier; my old ones had plastic hooks that protruded from the ceiling, one of which broke off when I replaced the battery and tried to reattach it. This unit is designed differently and seem less likely to break plus, given the battery is accessible without removing it, I won't have to remove it.


on 01-14-2012 by wifier

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Questions & Answers

Does Kidde KN-COPE-I have a test and a mute button? Thanks.

by Don Coates. on 12-29-2013

The Kidde KN-COPE-I does feature a test button and has a Hush ® feature .

on 03-06-2014

We have been in our new home for 10 months. This type of smoke alarm was installed by our electrician, but we were never received a user manual - and I am unable to print one with the tab on your web page. (does not work) Today, the alarms all went off saying "fire". We have no fire, could not get them off. Unplugged them all and later tried to put them back up in case we had a fire in the night , but the alarm for "fire" will not stop. we don't know what to do! Please advise!!

by Scott H. on 04-07-2013

Contact the manufacture. They can provide a manual for your items and they can trouble shoot the items to determine the problem.Kidde 800-880-6788

on 04-08-2013

Is this a good alarm to replace are fireX alarm in the kitchen. When ever we cook a big meal it is constantly alarming. It wired through out the house.

by Patrice D. on 02-26-2013

Depending on the model f smoke alarm you have currently will depend on the model you will replace it with. You do not need a carbon alarm in the kitchen so if you wanted to just do a basic smoke alarm there that would be fine.

on 04-02-2013
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