Due to supply chain disruptions, inflation and changes in currency valuation, please be advised that price and delivery time is tentative and subject to change even after you place your order. Please contact us for updated price before making payment for your order. CLICK HERE for further details.

Kidde: Nighthawk Battery Operated Carbon Monoxide Alarm - KN-COB-B-LP

Only 1 left
Quantity: 1

Provides peace of mind against the silent killer.

  • Battery Operated (3AA's included) - Provides protection during power outage.

  • Two LEDs: Red (illuminates when in alarm mode) and Green (DC power is present, normal operation).

  • Test/Reset Button - Tests CO alarm circuit operation and allows you to immediately silence the alarm.

  • End of Life Alarm - Alerts user to replace CO alarm after 10-years of operation.

  • Part Number - 900-0233


The Nighthawk KN-COB-B-LP battery operated carbon monoxide alarm is an easy to install unit that provides reliable protection against the dangers of carbon monoxide. Written information and instruction make this unit's operation easy for anyone to understand. The Nighthawk DC Basic alarm has a small sleek design that is suitable for all living areas and 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 Nighthawk KN-COB-B-LP provides you and your family with a loud warning signal against the dangers of elevated carbon monoxide levels in your home. The battery operated CO alarm provides continuous monitoring of CO levels, even during power outages when AC-only units are not providing protection. The Nighthawk CO alarm has a 10-year product life, providing 40% longer protection than other CO alarms. The battery operated CO alarm includes multiple mounting options allowing installation on a wall or tabletop.

Key Features:

  • Battery Operated (3AAs included) – Provides protection during power outages.

  • Test/Reset Button – Tests the 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. (40% longer than other CO alarms).

  • UL Listed

    Technical Specifications

    Part Number: 900-0233
    Model: KN-COB-B-LP
    Power Source: 3 AA Batteries
    Sensor: Electrochemical
    Audio Alarm: 85dB at 10ft
    Temperature Range: 40˚F (4.4˚C) to 100˚F (37.8˚C)
    Humidity Range: 10%-95% relative humidity (RH)
    Size: 3.0” x 5.0” x 1.5”
    Weight: .44 lbs with battery
    Interconnects: No

    Architectural and Engineering Specifications

    The carbon monoxide alarm shall be Kidde Unit Number KN-COB-B-LP (part number 900-0233) or approved equal. It shall be powered by three (3) AA batteries (included). The temperature operating range shall be between 40°F and 100°F (4°C and 38°C) and the humidity operating range shall be 10% - 95% relative humidity. 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 alarm can be installed on the surface of any wall or table top following the UL/NFPA/Manufacturer's recommended placement guidelines. The alarm shall include a battery lockout system that deters closure of battery door without using three batteries. The alarm shall include a test button that will electronically simulate the presence of CO and cause the unit to go into alarm. This sequence tests the unit's electronics to ensure proper operation. Per UL 2034 requirements, 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 unit shall incorporate 2 LED's. A green LED will flash once every 30 seconds to indicate the alarm is operating properly when power is present. A red LED will pulse to indicate carbon monoxide has been detected until the device is reset or CO is eliminated. 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 with a corresponding red LED flash. It shall also include a 10-year manufacturer’s limited warranty. *Based on accuracy claims of major manufacturers




Part Number KN-COB-B-LP - 900-0233
Weight (KG) 0.200000
Packing Unit 1 Piece
Only registered users can write reviews. Please Sign in or create an account