1. Introdução
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. Informações importantes de segurança
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. Recursos do Produto
- Operado por bateria: Provides easy installation without the need for electrical wiring.
- Interconexão sem fio: Connects with compatible First Alert wireless alarms to create a comprehensive safety network.
- Voice Alarm with Programmable Location: Indica claramente o tipo de perigo e sua localização.
- Advanced Electrochemical CO Sensor: Detects carbon monoxide from various sources.
- Operação com botão único: Used for testing the alarm and silencing false alarms.
- Dois recursos de travamento: Provides visual indication of a previous alarm event.
- Características de dois silêncios: Allows temporary silencing of nuisance alarms.
4. Conteúdo da embalagem
Ao abrir a embalagem, verifique se todos os componentes estão presentes:
- First Alert BRK CO511 Carbon Monoxide Detector Unit
- Suporte de montagem
- Acessórios de montagem (parafusos e buchas)
- 2 pilhas AA
- Manual do usuário
- Guia de instalação rápida

Image: Contents of the First Alert CO511 package, including the detector, mounting hardware, and batteries.
5. Instalação
Proper placement and installation are crucial for the effective operation of your carbon monoxide detector.
5.1 Posicionamento Recomendado
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 Etapas de montagem
- Instale as baterias: Open the battery compartment and insert the two AA batteries, ensuring correct polarity.
- Selecione o local: Choose a suitable location on a wall or ceiling, away from direct sunlight, vents, or areas with high humidity.
- Suporte de montagem: Use the provided screws and anchors to securely attach the mounting bracket to the chosen surface.
- Anexar detector: Alinhe o detector com o suporte de montagem e gire no sentido horário até que ele se encaixe no lugar.
- 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. Instruções de operação
7.1 Testando o alarme
Pressione e segure o Teste/Silêncio 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 Silenciando o Alarme
If the alarm sounds due to a known, non-emergency condition (e.g., temporary CO from a gas stove), you can press the Teste/Silêncio 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 O que fazer quando o alarme soar
- Vá imediatamente para um local com ar fresco ao ar livre ou abra portas e janelas.
- 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. Manutenção
Regular maintenance ensures the continued reliability of your carbon monoxide detector.
8.1 Testes regulares
Test your CO alarm weekly by pressing the Teste/Silêncio button. This confirms the unit's electronics and battery are functioning.

Image: A person testing a CO alarm.
8.2 Substituição da bateria
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 Limpando a Unidade
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 Substituição do alarme
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. Solução De Problemas
If your CO alarm is not functioning as expected, review the following common issues. For detailed troubleshooting, consult the full user manual.
| Problema | Possível causa | Solução |
|---|---|---|
| O alarme emite bipes periodicamente. | Bateria fraca | Substitua as pilhas por novas pilhas alcalinas AA. |
| Alarme soa sem fonte visível de CO | Nuisance alarm, high humidity, or dust buildup | Press silence button. Clean the unit. Relocate if nuisance alarms persist. |
| O alarme não dispara durante o teste. | 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. Especificações
| Recurso | Detalhe |
|---|---|
| Marca | Primeiro Alerta |
| Número do modelo | CO511B |
| Fonte de energia | Alimentado por pilhas (2 pilhas AA incluídas) |
| Tipo de sensor | Eletroquímica |
| Tipo de alarme | Audible, Voice with Location |
| Cor | Branco |
| Dimensões do produto | 2.38"P x 5.13"L x 5.13"A |
| Peso do item | 10.4 onças |
| Duração média da bateria | 8760 Hours (approximately 1 year) |
| UPC | 029054002914 |
11. Garantia e Suporte
11.1 Informações de garantia
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 Suporte ao cliente
For technical assistance, troubleshooting, or warranty claims, please contact First Alert customer support. Contact information can typically be found on the First Alert website ou no manual completo do usuário.





