1. Okwu mmalite
Thank you for choosing the First Alert BRK CO511 Wireless Interconnected Carbon Monoxide Alarm. This device is designed to detect elevated carbon monoxide (CO) levels and provide an audible and voice warning. Its wireless interconnection capability allows it to communicate with other compatible First Alert wireless alarms, creating a unified safety network throughout your home. The voice alarm feature includes programmable location announcements for clear identification of the hazard area.
2. Ozi nchekwa dị mkpa
WARNING: Carbon Monoxide (CO) is a colorless, odorless, and tasteless gas that can be fatal. This detector is designed to alert you to the presence of carbon monoxide. It is not a substitute for proper maintenance of fuel-burning appliances, including ventilation systems, nor is it a substitute for a smoke alarm.
Please read this entire user manual carefully before installation and operation. Keep this manual in a safe place for future reference. If you are installing this alarm for use by others, you must leave this manual or a copy of it with the end user.
3. Akụrụngwa Ngwaahịa
- Ejiri batrị: Provides easy installation without the need for electrical wiring.
- Njikọ ikuku ikuku: Connects with compatible First Alert wireless alarms to create a comprehensive safety network.
- Voice Alarm with Programmable Location: Clearly announces the type of danger and its location.
- Advanced Electrochemical CO Sensor: Detects carbon monoxide from various sources.
- Ịrụ otu bọtịnụ: Used for testing the alarm and silencing false alarms.
- Akụkụ abụọ nke njide: Provides visual indication of a previous alarm event.
- Akụkụ abụọ nke ịgbachi nkịtị: Allows temporary silencing of nuisance alarms.
4. Ihe ngwugwu
Mgbe imepechara ngwugwu ahụ, chọpụta na akụrụngwa niile dị:
- First Alert BRK CO511 Carbon Monoxide Detector Unit
- Arịọnụ mgbodo
- Ngwa mgbakwunye (skru na arịlịka)
- 2 AA batrị
- Akwụkwọ ntuziaka onye ọrụ
- Ntuziaka nwụnye ngwa ngwa

Image: Contents of the First Alert CO511 package, including the detector, mounting hardware, and batteries.
5. Nwụnye
Proper placement and installation are crucial for the effective operation of your carbon monoxide detector.
5.1 akwadoro idobe
Install carbon monoxide alarms on every level of your home and in every bedroom. Consider placing additional alarms in living areas, hallways, and basements, especially near fuel-burning appliances.

Image: Recommended placement of CO alarms throughout a home.
5.2 Nzọụkwụ ịrị elu
- Wụnye batrị: Open the battery compartment and insert the two AA batteries, ensuring correct polarity.
- Họrọ ebe: Choose a suitable location on a wall or ceiling, away from direct sunlight, vents, or areas with high humidity.
- Nkwado ugwu: Use the provided screws and anchors to securely attach the mounting bracket to the chosen surface.
- Ihe nchọpụta jikọtara: Align the detector with the mounting bracket and twist clockwise until it locks into place.
- Test Unit: Press and hold the Test/Silence button to ensure the alarm sounds.


Images: Front and back views of the CO511 detector, illustrating its design for mounting.
6. Wireless Interconnection
The CO511 detector features wireless interconnection technology, allowing it to communicate with other compatible First Alert wireless alarms. When one interconnected alarm detects CO, all other interconnected alarms will sound, providing early warning throughout your home.
6.1 Linking Alarms
Refer to the detailed instructions in the full user manual for specific steps on wirelessly linking multiple CO511 units or other compatible First Alert wireless alarms. This typically involves a simple pairing process using the test button on each unit.
7. Ntuziaka ọrụ
7.1 Testing the Alarm
Pịa ma jide Nwale/gbachi nkịtị button on the front of the alarm for a few seconds. The alarm should sound a loud siren and announce "Carbon Monoxide! Evacuate!" or similar. Test your alarm weekly to ensure proper function.
7.2 Silencing the Alarm
If the alarm sounds due to a known, non-emergency condition (e.g., temporary CO from a gas stove), you can press the Nwale/gbachi nkịtị button to temporarily silence it. The alarm will reset after a few minutes if the CO levels return to normal. If CO levels remain high, the alarm will reactivate.
7.3 Voice and Location Feature
When CO is detected, the alarm will not only sound a siren but also provide a clear voice message, such as "WARNING! Carbon Monoxide! Evacuate!" If programmed, it will also announce the location of the alarm (e.g., "Basement").
7.4 Ihe ị ga-eme mgbe mkpu dara
- Immediately move to fresh air outdoors or open doors/windows.
- Call your emergency services (e.g., 911) or the fire department.
- Do not re-enter the premises until it has been cleared by emergency responders and the CO source has been identified and corrected.
8. Nlekọta
Regular maintenance ensures the continued reliability of your carbon monoxide detector.
8.1 Nnwale Mgbe Niile
Test your CO alarm weekly by pressing the Nwale/gbachi nkịtị button. This confirms the unit's electronics and battery are functioning.

Image: A person testing a CO alarm.
8.2 nnọchi batrị
The CO511 operates on two AA batteries. When the batteries are low, the unit will chirp periodically and/or indicate a low battery warning. Replace batteries immediately with fresh AA alkaline batteries. The average battery life is approximately 8760 hours (1 year).
8.3 Na-ehicha ngalaba ahụ
Clean your CO alarm regularly to prevent dust and debris buildup, which can affect its performance. Use a soft, damp cloth to wipe the exterior. Do not use cleaning solvents or spray directly onto the unit.
8.4 Alarm Replacement
Carbon monoxide alarms have a limited lifespan. Replace your CO511 alarm at least every 10 years from the date of manufacture. Refer to the date printed on the back of the unit.

Image: A person replacing a CO alarm.
9. Nchọpụta nsogbu
If your CO alarm is not functioning as expected, review the following common issues. For detailed troubleshooting, consult the full user manual.
| Nsogbu | Ihe nwere ike ime | Ngwọta |
|---|---|---|
| Alarm chirps periodically | Batrị dị ala | Replace batteries with new AA alkaline batteries. |
| Alarm sounds without visible CO source | Nuisance alarm, high humidity, or dust buildup | Press silence button. Clean the unit. Relocate if nuisance alarms persist. |
| Alarm does not sound during test | Dead batteries, unit malfunction | Replace batteries. If still not working, replace the unit. |
| Wireless interconnection not working | Alarms not properly linked, interference | Re-link alarms according to manual. Check for sources of interference. |
10. Nkọwapụta
| Njirimara | Nkọwa |
|---|---|
| Ụdị | Njikere mbụ |
| Nọmba nlereanya | CO511B |
| Isi Iyi Ike | Akwadoro batrị (batrị AA 2 gụnyere) |
| Ụdị ihe mmetụta | Nlekpo |
| Typedị Oti mkpu | Audible, Voice with Location |
| Agba | Ọcha |
| Akụkụ ngwaahịa | 2.38"D x 5.13"W x 5.13"H |
| Ibu Ibu | 10.4 ounces |
| Nkezi Ndụ batrị | 8760 Hours (approximately 1 year) |
| UPC | 029054002914 |
11. Akwụkwọ ikike na nkwado
11.1 Ozi akwụkwọ ikike
This First Alert BRK CO511 Carbon Monoxide Alarm comes with a manufacturer's warranty. Please refer to the warranty description provided in the original packaging or contact First Alert customer support for specific details regarding coverage and duration.
11.2 Nkwado ndị ahịa
For technical assistance, troubleshooting, or warranty claims, please contact First Alert customer support. Contact information can typically be found on the First Alert websaịtị ma ọ bụ na ntuziaka onye ọrụ zuru ezu.





