Table of Contents

Introduction . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 1

Illustrations . . . . . . . . . .. . . . . . . . . . . . . . . .. 2-3

Features . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . 4-8

Installation . . . . . . . . . . . . . .. . . . . . . . . . . . 9-14

Operation . . . . . . .. . . . . . . . . . . . . . .. . . . . 15-17

Alarm Removal . . . . . . . . .. . . . . . . . . . . . . . .. 17

Alarm Replacement . . . . . . . . . . . . . . . .. . . . . 17

Battery Replacement . . . . . . . . . . . . . . . . . .. . 18

Maintenance . . . . . . . . . .. . . . . . . . . . . . . . . .. 19

Carbon Monoxide Safety . . . . . . .. . . . . . . 20-23

Fire Safety . . . . . . . . . . . . . . . . . . . . .. . . . . 24-26

Warranty . . . . . . . . . . . . . . . . . .. . . . . . . . . 27-29

Introduction

Thank you for purchasing the Kidde Combination Smoke and Carbon Monoxide Alarm Model # KN-COSM-BCA.

This alarm has a five-year limited warranty.

Please take a few minutes to thoroughly read this user’s guide, and save for future reference. Teach children how to respond to the alarms, and that they should never play with the unit.

Your Kidde Smoke/CO Alarm was designed to detect both smoke and carbon monoxide from any source of combustion in a residential environment. It is not designed for use in a recreational vehicle (RV) or boat.

If you have any questions about the operation or installation of your alarm, please call our toll free Consumer Hotline at 1-800-880-6788.

The guide on page 25 will help you determine the correct location of safety products that will help keep your home a safer place.

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Kidde KN-COSM-BCA manual Table of Contents, Introduction

KN-COSM-BCA specifications

The Kidde KN-COSM-BCA is a highly rated combination smoke and carbon monoxide alarm designed to enhance home safety. This device integrates advanced technologies that provide comprehensive protection against two of the most critical household threats: fire and toxic gas exposure.

One of the standout features of the KN-COSM-BCA is its dual-sensor technology, which combines both photoelectric and ionization sensors. The photoelectric sensor is especially effective at detecting smoldering fires, which often produce a large amount of smoke without an open flame. On the other hand, the ionization sensor is more responsive to fast-burning fires, ensuring that users are alerted promptly in the event of any fire emergency. This combination ensures a higher level of accuracy in distinguishing between potential threats, thus reducing the chances of nuisance alarms.

Carbon monoxide detection is another critical component of the Kidde KN-COSM-BCA. Carbon monoxide is a colorless, odorless gas that can be lethal even in small amounts. The alarm features a powerful CO sensor designed to detect dangerous levels of carbon monoxide quickly and accurately. The device's LED display shows real-time CO levels, allowing users to be informed about their indoor air quality at a glance.

Another key characteristic of the Kidde KN-COSM-BCA is its voice alarm feature. Instead of just a series of beeps, the alarm announces the type of hazard detected, either “Fire” or “Warning: Carbon Monoxide.” This clear communication helps users quickly understand the nature of the threat, facilitating timely responses and safety measures.

The device is equipped with a hush feature to temporarily silence unwanted alarms, making it convenient during cooking or other activities that may trigger false alarms. Additionally, its battery-operated system, backed by a reliable lithium battery, ensures that the alarm remains functional even during power outages, enhancing household safety at all times.

Furthermore, the Kidde KN-COSM-BCA comes with a test/reset button, allowing users to regularly check the functionality of the unit, ensuring peace of mind. Its sleek design enables easy installation in various locations throughout the home, from hallways to bedrooms.

In summary, the Kidde KN-COSM-BCA stands out due to its dual-sensor technology, advanced carbon monoxide detection, clear vocal alerts, and user-friendly features, making it an essential addition to any safety-conscious household.