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THANK YOU for purchasing this Carbon Monoxide alarm. This alarm does not require battery
changes. It has a permanent power sealed battery which will last for 10 years. It is designed to
detect carbon monoxide which reaches the sensor. It is not designed to detect fire, heat, flames
or any other gas. This manual includes important information regarding where to install the alarm,
how to operate, maintenance, testing and product features. It also includes tips and information
which could help protect you and your family.
What You Should Know About CO .......................................... 2
Basic Safety Information.......................................................... 3
Recommended Location of Alarms.......................................... 4
Avoid These Locations ............................................................ 4
How to Install ........................................................................... 5
Reset Feature .......................................................................... 6
Operation & Alarm Characteristics .......................................... 6
What To Do If The Alarm Sounds ............................................ 7
CO Alarm Silence Feature ....................................................... 7
Testing & Maintenance ............................................................ 8
CO Alarm Limitations ............................................................... 9
Quick Reference Guide & Operational Summary .................. 10
Warranty ..................................................................Back Cover
Models MC304S, MCD305S, MCGD305S
Carbon Monoxide Alarm
with 10 Year Permanent Power
Sealed Battery
PLEASE READ AND SAVE!
Table of Contents:
Conforms to Standard
UL 2034
Single Station
Carbon Monoxide Alarm
Page #
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Summary of Contents for Universal Security Instruments MC304S
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Page 1: Table Of Contents
Models MC304S, MCD305S, MCGD305S Carbon Monoxide Alarm with 10 Year Permanent Power Sealed Battery Conforms to Standard UL 2034 Single Station Carbon Monoxide Alarm PLEASE READ AND SAVE! THANK YOU for purchasing this Carbon Monoxide alarm. This alarm does not require battery changes. -
Page 2: What You Should Know About Co
WHAT YOU SHOULD KNOW ABOUT CO Carbon Monoxide (CO) is an insidious poison. It is a colorless, odorless, tasteless gas. It is a cumulative poison. Even low levels of CO have been shown to cause brain and other vital organ damage in unborn infants with no effect on the mother. -
Page 3: Basic Safety Information
INSTALLATION RECOMMENDATIONS Early warning is best achieved by the installation of alarms on all floors and areas of the household. WHERE THIS ALARM SHOULD BE INSTALLED • Install an alarm inside each bedroom where the occupant closes the door while sleeping. •... -
Page 4: Recommended Location Of Alarms
FIGURE 2 • NOTE: For any location, make sure no door or other obstruction could prevent the Carbon Monoxide (CO) from reaching the alarm. WHERE THIS ALARM SHOULD NOT BE INSTALLED To avoid causing damage to the unit, to provide optimum protection, and to prevent unnecessary alarms. -
Page 5: How To Install
HOW TO INSTALL THIS CO ALARM IMPORTANT: Read all instructions before using this product. 1. Activate the Permanent Power battery feature by removing and discarding the battery pull tab. NOTE: Once activated, the alarm cannot be turned off without permanent deactivation. The alarm will remain on for the next ten years. -
Page 6: Reset Feature
• Test the alarm once a week. If the alarm ever fails to test correctly, have it replaced immediately. If the alarm is not working properly, it cannot alert you to a problem. • This alarm must have battery power to operate. If the battery is dead, the alarm cannot operate. The sealed battery cannot be replaced. -
Page 7: What To Do If The Alarm Sounds
IF THE CO ALARM SOUNDS: Operate TEST/SILENCE button; Call your emergency services, fire department or 911. Write down the number of your local emergency service here: Immediately move to fresh air - outdoors or by an open door/window. Do a head count to check that all persons are accounted for. -
Page 8: Testing & Maintenance
If the alarm does not sound properly: 1. Test the alarm again. If the alarm is still not working properly, replace it immediately. USING THE PEAK CO MEMORY (Digital Display Models Only): The CO Memory feature lets you check the highest level of CO recorded, since the last reset, and is displayed in parts per million (ppm) of carbon monoxide. -
Page 9: Co Alarm Limitations
CARBON MONOXIDE (CO) ALARM LIMITATIONS CO Alarms have limitations. Like any other electronic device, CO Alarms are not foolproof. CO Alarms have a limited operational life. Your CO Alarm must be tested weekly, because it could fail to operate at any time. If your CO Alarm fails to test properly, or if its self-diagnostic test reveals a malfunction, immediately have the unit replaced (see last page for warranty information). -
Page 10: Quick Reference Guide & Operational Summary
• Check for exhaust backflow from CO sources. Check the draft hood on an operating furnace for a backdraft. Look for cracks on furnace heat exchangers. • Check the house or garage on the other side of a shared wall. •... -
Page 11: Warranty
TEN-YEAR LIMITED WARRANTY USI Electric, Inc. /Universal Security Instruments, Inc. (“USI”) warrants this product to be free from defects in material and workmanship for a period of 10 (ten) years from the date of purchase. This warranty shall not apply to any damage which may be caused by the sealed batteries used in this product.