Kidde Nighthawk KN-COB-DP-LS Plug-In Carbon Monoxide Alarm with Digital Display

Kidde Nighthawk KN-COB-DP-LS Plug-In CO Alarm: At a Glance

The Kidde Nighthawk KN-COB-DP-LS is an AC plug-in carbon monoxide alarm from Kidde's trusted Nighthawk series, featuring a digital display that continuously shows ambient CO concentration in parts per million (PPM). Designed for fast, tool-free installation in any standard 120V outlet, the KN-COB-DP-LS is ideal for hotels, rental properties, small offices, classrooms, break rooms, and any occupied space requiring visible, real-time CO level monitoring without the need for hard-wired installation. The digital PPM display enables safety personnel to assess CO levels at a glance during walkthroughs, providing actionable information before alarm thresholds are reached. UL 2034 listed and engineered by Kidde — a Carrier company and one of the world's most trusted names in fire and CO safety — the KN-COB-DP-LS is a versatile, professional-grade solution for flexible CO monitoring deployments.

• Power: AC plug-in (120V), no tools or wiring required
• Display: Digital LED showing CO concentration in PPM
• Series: Nighthawk
• Certification: UL 2034 listed
• SKU: KN-COB-DP-LS

Why Choose the Kidde Nighthawk KN-COB-DP-LS?

The Nighthawk series from Kidde represents a lineage of reliable CO detection technology trusted by safety professionals, hospitality operators, and facilities managers for decades. The KN-COB-DP-LS inherits this legacy with its plug-in convenience and digital PPM display — two features that make it especially valuable in commercial and institutional settings where installation flexibility and continuous monitoring visibility are priorities. Unlike battery-only units, the plug-in design ensures the alarm is always powered without the need for battery maintenance, while the outlet-mounted form factor allows repositioning as facility layouts change.

The digital PPM display is the defining feature for professional environments. Rather than relying solely on an audible alarm that only triggers at dangerous CO thresholds, the KN-COB-DP-LS provides continuous visibility into current CO levels. Safety officers conducting rounds can note any elevation in CO readings and initiate an investigation before occupants are at risk — a proactive safety posture that is particularly valuable in facilities with combustion appliances, vehicle traffic, or industrial processes nearby. For hospitality and property management operators, the digital display also provides quick confirmation of normal status during routine room inspections.

Key Features

• AC plug-in design — installs instantly into any standard 120V outlet, no tools required
• Digital LED display shows real-time CO concentration in parts per million (PPM)
• Nighthawk series — Kidde's proven professional CO detection platform
• UL 2034 listed for compliance with U.S. CO alarm standards
• Electrochemical sensor technology for accurate, stable long-term detection
• Peak CO level memory — records highest CO concentration for post-incident review
• Test/reset button for routine safety inspection and compliance documentation
• 85 dB audible alarm for clear notification in occupied spaces
• Low-profile outlet-mounted design — no wall space required
• Suitable for both commercial and residential occupancies
• Meets OSHA recommendations and NFPA 720 guidelines for CO detection
• Manufactured by Kidde, a Carrier company with a global reputation for safety products

Real-World Benefits

For hotel and hospitality operators, the KN-COB-DP-LS's plug-in design dramatically simplifies deployment across guestrooms, common areas, and back-of-house spaces. No licensed electrician is required, no junction boxes need to be installed, and units can be added or relocated as facility configurations change. Housekeeping and maintenance staff can verify the digital display during routine room inspections, providing a simple visual confirmation that CO levels are normal — a meaningful operational benefit in large properties with frequent guest turnover.

In small business and office environments, the KN-COB-DP-LS offers a code-compliant CO detection solution that can be implemented immediately without capital improvements. Break rooms with gas appliances, server rooms with backup generators, and areas near loading docks or parking garages are all high-priority locations where the KN-COB-DP-LS provides visible, continuous CO monitoring. The digital PPM display enables safety personnel to correlate CO level changes with specific activities or equipment, supporting root cause analysis and preventive maintenance planning.

Property managers overseeing rental units appreciate the combination of plug-in simplicity and digital monitoring. Tenants can see that CO protection is active at a glance, and property owners can document CO alarm presence with photographic evidence during inspections — meeting the growing number of state and local requirements for CO detection in rental properties.

Applications and Ideal Use Cases

The Kidde Nighthawk KN-COB-DP-LS is ideal for any setting where plug-in CO detection with digital monitoring capability is needed. Primary applications include hotel and motel guestrooms and common areas, short-term rental properties, small offices and break rooms with combustion appliances, classrooms and administrative offices, retail spaces, rental residential units, elder care and assisted living rooms, and any area where CO monitoring must be visible and immediately verifiable. The plug-in format makes it especially practical for temporary or seasonal facilities, pop-up workspaces, and locations where permanent wiring is not feasible.

Product Specifications

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Frequently Asked Questions

Does the KN-COB-DP-LS require any wiring or installation tools?

No. The KN-COB-DP-LS plugs directly into any standard 120V AC outlet. No tools, no wiring, and no licensed electrician are required, making it one of the fastest CO alarm deployment options for commercial and rental property operators.

What does the digital display show on the KN-COB-DP-LS?

The digital display shows the current ambient CO concentration in parts per million (PPM) continuously, even when CO levels are below alarm thresholds. It also records peak CO levels so safety personnel can review the highest CO concentration logged by the unit.

Is the KN-COB-DP-LS UL 2034 listed?

Yes. The KN-COB-DP-LS is UL 2034 listed, meeting the recognized U.S. standard for single- and multiple-station carbon monoxide alarms. It is suitable for use in commercial and residential occupancies where CO alarm compliance is required.

Does the KN-COB-DP-LS have battery backup?

The KN-COB-DP-LS is powered by AC outlet power and typically does not include battery backup in the base configuration. If battery backup is required for your application, consider the Kidde KN-COB-DP2, which includes a 9V battery backup along with plug-in AC power.

Can this unit be used in hotel guestrooms?

Yes. The KN-COB-DP-LS is widely used in hotel and hospitality environments due to its plug-in simplicity, digital display for visual status confirmation, and UL 2034 compliance. Many state lodging codes require CO alarms in guestrooms — the KN-COB-DP-LS meets those requirements efficiently.

What is the service life of the KN-COB-DP-LS?

Kidde recommends replacing CO alarms every 5–7 years. The KN-COB-DP-LS will alert users when the unit has reached end of life. Property managers should document installation dates and maintain a replacement schedule as part of their safety management program.