First Alert CO400B User Manual

ELECTROCHEMICAL
CO SENSOR
Most accurate technology available for
detecting carbon monoxide as compared to
other sensing technologies.
BACKLIT DIGITAL
DISPLAY (CO410B)
Easily view CO hazard in PPM , peak CO
level and other alarm functions.
TWO SILENCE
FEATURES
Silences low battery chirp for up to
eight hours or silence nuisance alarm
for several minutes.
CAT.
CO400B/CO410B
2 AA Battery Powered
The First Alert Cat. Nos. CO400B and CO410B are battery operated, 3V (two 1.5V
AA batteries) single station carbon monoxide alarms specifically designed for
residential and institutional applications including sleeping rooms of hospitals,
hotels, motels, dormitories and other multi-family dwellings as defined in
standard NFPA 720. Models CO400 and CO410 comply with UL2034, NFPA 720
and other agencies that model their codes after the above agencies.
First Alert CO400B and CO410B feature an electrochemical CO sensor, an 85dB
horn a silence feature and a red LED that blinks to indicate unit is receiving
power. The front access battery door allows battery access without removing the
unit from the wall. The low power warning indicator will cause the alarm to
“chirp” when the batteries need replacing. The low power warning indicator can
be silenced for up to 8 hours. An Alarm Action Chart identifies action steps to
take if unit is in alarm. First Alert CO410B also features a backlit digital display
that shows visual confirmation of CO levels and has Peak Level Memory,
remembers and displays the highest levels detected when the Peak Level button
is pressed. Backlight illuminates only when any button is pressed or unit is in
alarm. Includes mounting anchors and screws.
CARBON
MONOXIDE
ALARM
CO
CO400B
CO410B

First Alert CO400B Specifications

General

Brand	First Alert
Model	CO400B
Category	Carbon Monoxide Alarm
Language	English

Summary

Electrochemical CO Sensor

Accuracy and Technology

Highlights the electrochemical sensor as the most accurate technology for detecting carbon monoxide.

Backlit Digital Display

Display Features

Details the backlit display showing CO hazard in PPM, peak CO level, and other alarm functions.

Silence Features

Nuisance Alarm Silencing

Describes silencing low battery chirps or nuisance alarms for several minutes.

Technical Specifications

Alarm Dimensions and Weight

Provides physical size and weight details for the CO400B and C0410B models.

Operating Environment

Specifies the required operating temperature and humidity ranges.

Alarm and Sensor Details

Details audio alarm output, CO sensor type, and indicator lights/sounds.

Digital Display Capabilities

Outlines features of the digital display including battery level and CO concentrations.

Architectural and Engineering Specifications

Model Compliance and Features

Lists required features like electrochemical sensor, digital display, and alarm thresholds.

Operational Capabilities

Defines operating voltage, alarm levels, silence features, and environmental ranges.

Installation of Alarm

Installation Guidelines

Instructs to conform to NFPA 720 and local building codes for proper installation.