Carbon Monoxide Alarm AC Powered KN-COP-DP-B

Manufacture: kidde
Product code: KN-COP-DP-B

✅ Provides peace of mind against the silent killer

✅ Digital Display - Displays the level of carbon monoxide the unit is sensing. Automatically dims in low light conditions.

✅ Peak Level Button - Peak level button displays the peak CO level recorded since its last reset.

✅ End of Life Alarm - Alerts user to replace CO alarm after 10-years of operation. Can be temporarily silenced for convenience.

✅ No Night Chirps - End of life and low battery signals programmed not to occur in dark conditions, helping to prevent needless waking of user.

✅ Part Number - 900-0278


Consulting hotline: 0944934114
Product information


The Kidde KN-COP-DP-B AC powered, plug-in carbon monoxide alarm with 2AA battery backup and digital display is an easy to install unit that provides reliable protection against the dangers of carbon monoxide. The 2AA backup batteries offer protection during power outages, and ship in the unit with pull tab activator for quick installation. The Kidde KN-COP-DP-B carbon monoxide alarm has a 10-year limited warranty. 10-Year Life: “If your CO alarm was manufactured prior to 2013, it does not have a 10 year life. Consult your User Guide for additional details, or contact us for more information.”

Consumer Benefits

The Kidde KN-COP-DP-B plug-in carbon monoxide alarm with battery backup provides you and your family with a warning signal to protect against dangerous levels of carbon monoxide in your home. The battery backup feature provides continuous monitoring of CO levels, even during power outages when AC-only units are not providing protection. The KN-COB-DP-B alarm has a 10-year product life, providing 40% longer protection than other CO alarms.

Part Number (Ordering Number): 900-0278


Digital Display– Displays the level of CO the unit is sensing. LEDs provide clear daytime visibility that automatically dims in dark conditions.

Peak Level Button– Displays the highest level of CO recorded since last reset. Ideal for checking previous conditions while away or to assist medical responders.

Test/Reset Button – Tests unit for proper operation. Resets the carbon monoxide alarm.

10 Year End of Life Warning - Alerts user to replace CO alarm after 10 years of operation, as required by UL.

Low Battery Hush - Temporarily silence low battery notification so the 2 AAs can be replaced at a more convenient time.

Rotating AC Blades - Unit remains vertical whether electrical socket is in vertical or horizontal orientation.

UL Listed – Listed by UL to the UL2034 Standard.

Architectural and Engineering Specifications

The carbon monoxide alarm shall be Kidde model number KN-COP-DP-B (Part Number 900-0278) or approved equal. It shall be powered by a 120VAC, 60 Hz source along with 2 AA alkaline.battery backup. The temperature rating shall be between 40°F and 100°F (4°C and 38°C) and the humidity operating range shall be 10% - 95% relative humidity, non-condensing.

The CO sensor shall be of a fuel cell design and shall meet the sensitivity requirements of Underwriters Laboratories UL2034 Single and Multiple Station Carbon Monoxide Alarms. 

The unit shall provide an accuracy of +/- 30% when reading concentration levels. The alarm shall include an integral plug that can be installed in any outlet following the UL/NFPA/Manufacturer’s recommended guidelines. The AC blades remain vertical independent of whether the electrical socket is mounted vertically or horizontally. The unit shall incorporate a digital display that meets the sensitivity requirements of UL2034. The display will identify the levels of CO in parts per million (ppm) once that level reaches 30ppm. The display will automatically dim in low light conditions, and will turn off when AC power is removed unless more than 100ppm is detected or in alarm mode.

The alarm shall include a test/reset button. If pressed and released during normal operation, it shall electronically simulate the presence of CO and cause the unit to go alarm. This sequence tests the unit’s electronics to ensure proper operation. If pressed during alarm mode, the unit will be silenced and will begin monitoring CO levels again.

In accordance with UL2034, the CO sensor will not alarm to levels of CO below 30 ppm and will alarm in the following time range when exposed to the corresponding levels of CO.

70 ppm CO concentration 60 – 240 minutes

150 ppm CO concentration 10 – 50 minutes

400 ppm CO concentration 4 – 15 minutes

The alarm shall include a piezoelectric horn that is rated at 85 decibels at 10 feet. When the unit detects carbon monoxide, the alarm pattern will be four (4) short beeps – followed by five (5) seconds of silence – followed by four (4) short beeps. A number reading will appear on the digital display identifying the measured CO concentration (in ppm).

Technical Specifications

Part Number: 900-0278
Model: KN-COP-DP-B
Power Source: 120VAC, 60 Hz, 90mA max 2- AA battery back-up
Sensor: Electrochemica
Audio Alarm: 85dB at 10ft
Temperature Range: 40 ̊F (4 ̊C) to 100 ̊F (38 ̊C)
Humidity Range: 10%-95% relative humidity (RH), Non-condensing
Size: 3.0”x 5.6” x 1.5”
Weight: . 62 lbs.
Interconnects: No
Warranty: 10 year limited

Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup and Digital Display KN-COP-DP-B

Ordering Information

Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup and Digital Display KN-COP-DP-B

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