CO400 - Smoke detector FIRST ALERT - Free user manual and instructions
Find the device manual for free CO400 FIRST ALERT in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Product Type | Smoke Detector (Ionization) |
| Model | CO400 |
| Brand | First Alert |
| Dimensions | Approximately 4.8 inches in diameter x 1.5 inches deep |
| Weight | Approximately 0.5 lbs (with battery) |
| Power Source | One 9V battery (included) |
| Battery Life | Approximately 1 year under normal conditions |
| Sensor Type | Ionization sensor for fast-flaming fires |
| Alarm Volume | 85 decibels at 10 feet |
| Test Button | Yes, for monthly testing |
| Hush/Silence Feature | Yes, temporarily silences nuisance alarms |
| Low Battery Warning | Chirps approximately every 30-60 seconds |
| End of Life Warning | Chirps after 10 years of operation |
| Mounting | Ceiling or wall mount with included bracket |
| Installation | DIY, no wiring required |
| Compatibility | Standalone unit, not interconnectable |
| Certifications | UL listed, meets UL 217 standards |
| Maintenance | Test weekly, vacuum monthly, replace battery annually, replace detector every 10 years |
| Warranty | Limited 10-year warranty |
| Replacement Parts | 9V battery, mounting bracket (if needed) |
| Included Accessories | Mounting bracket, screws, 9V battery, user manual |
Frequently Asked Questions - CO400 FIRST ALERT
How do I install the First Alert CO400 smoke detector?
Choose a ceiling or wall location at least 4 inches from corners. Remove the mounting bracket from the detector, secure it to the mounting surface with screws (included). Connect the 9V battery, then twist the detector onto the bracket until it locks. Press the test button to confirm operation.
How often should I test my CO400 smoke alarm?
Test your alarm at least once a week by pressing and holding the test button for a few seconds until you hear a loud alarm sound. Release the button to stop.
What does a chirping sound every 30-60 seconds mean?
A chirp indicates low battery. Replace the 9V battery immediately. If chirping continues after battery replacement, the alarm may need cleaning or possibly replacement at the end of its 10-year life.
How often should I replace the battery?
Replace the battery at least once a year, or immediately when the low battery chirp begins. For maximum protection, replace the battery when you change your clocks for daylight saving time.
How long does the CO400 smoke detector last?
The detector has a 10-year lifespan from the date of manufacture. After 10 years, replace the entire unit even if it appears to work. The end-of-life warning (chirp pattern) will also indicate replacement is needed.
What should I do if the alarm sounds and there is no smoke or fire?
First, silence the alarm using the hush button. Check for common causes: steam from showers, cooking smoke, dust, or insects. Ventilate the area. If false alarms persist, clean the alarm and relocate it away from kitchens or bathrooms.
Can I silence a false alarm without removing the battery?
Yes, press the hush/silence button on the alarm cover. This will temporarily silence the alarm for about 15 minutes. The alarm will automatically reset after that time.
Where is the best place to install the CO400 smoke detector?
Install on the ceiling or wall in hallways outside sleeping areas, and at least one on every level of your home. Avoid bathrooms, kitchens (within 10 feet of cooking appliances), garages, and unheated attics to reduce false alarms.
How do I clean and maintain my smoke detector?
Vacuum the vents on the front and sides of the alarm at least once a month using a soft brush attachment to remove dust and debris. Wipe the exterior with a damp cloth. Do not use cleaners or solvents.
Is the CO400 interconnectable with other smoke detectors?
No, the First Alert CO400 is a standalone unit and does not support interconnection. For interconnected alarms, consider models specifically designed for that purpose.
User questions about CO400 FIRST ALERT
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Smoke detector in PDF format for free! Find your manual CO400 - FIRST ALERT and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. CO400 by FIRST ALERT.
USER MANUAL CO400 FIRST ALERT
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : FIRST ALERT
Model : CO400
Category : Smoke detector