1. Introdução
The First Alert SMI110 10-Year Sealed Battery Smoke Alarm is designed to provide reliable protection against fire hazards. This device incorporates Precision Detection advanced sensing technology to minimize nuisance alarms from cooking while ensuring early warning in the event of a home fire. Its 10-year sealed battery eliminates the need for battery replacements throughout the alarm's lifespan, simplifying maintenance.
This manual provides detailed instructions for the proper installation, operation, and maintenance of your First Alert SMI110 smoke alarm to ensure optimal performance and safety.
2. Principais características
- Tecnologia de Detecção de Precisão: Advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
- Bateria selada com duração de 10 anos: Eliminates battery replacements and low battery chirps for the life of the alarm, offering continuous power for a decade.
- Aviso sobre o fim da vida útil: Notifies you when it's time to replace the alarm, ensuring ongoing protection.
- Botão Teste/Silêncio: Allows for efficient testing to ensure the alarm is working properly and temporarily silences nuisance alarms.
3. Configuração e instalação
3.1 Unpacking the Alarm
Carefully remove the smoke alarm from its packaging. Inspect the unit for any signs of damage. The package should contain the smoke alarm unit, a mounting bracket, and screws with drywall anchors.

Figura 1: Frente view of the First Alert SMI110 Smoke Alarm, showing the test/silence button and speaker grille.

Figura 2: Lateral view of the First Alert SMI110 Smoke Alarm, illustrating its compact design.
3.2 Ativando a bateria
The First Alert SMI110 features a sealed 10-year lithium battery. To activate the battery, you must remove the yellow pull tab located on the back of the unit. Once the tab is removed, the alarm will be powered on. The unit will chirp once to confirm activation.

Figura 3: Voltar view of the First Alert SMI110 Smoke Alarm, showing the yellow pull tab for battery activation.
3.3 Posicionamento Recomendado
For optimal protection, install smoke alarms on every level of your home and inside every bedroom. Consider additional alarms in hallways and living areas. Avoid placing alarms directly above cooking appliances or in areas with high humidity, which can lead to nuisance alarms.

Figure 4: Illustration of recommended smoke alarm placement, including bedrooms, hallways, and each level of a home.
3.4 Montagem do alarme
Attach the mounting bracket to a wall or ceiling using the provided screws and drywall anchors. Once the bracket is securely installed, align the smoke alarm with the bracket and twist clockwise until it locks into place. Ensure the alarm is firmly attached to prevent accidental dislodgement.

Figure 5: A person installing the smoke alarm on a ceiling, demonstrating the ease of installation.
Vídeo 1: Um excessoview video demonstrating the features and installation process of the First Alert SMI110 smoke alarm. This video is provided by the seller, US Resideo LLC - FA.
4. Instruções de operação
4.1 Testando o alarme
After installation, and at least once a week, test your smoke alarm by pressing and holding the Test/Silence button. The alarm will emit a loud, piercing sound (approximately 85 dB) to indicate it is functioning correctly. The LED indicator will also flash during the test. Release the button to stop the test.
4.2 Recurso de Silêncio
In case of a nuisance alarm (e.g., from cooking smoke), press the Test/Silence button to temporarily mute the alarm for approximately 8 minutes. The alarm will automatically reset after this period to ensure continuous protection. If the smoke condition persists, the alarm will reactivate.
4.3 Indicador LED
The LED indicator light provides visual alerts:
- Operação normal: The LED will flash briefly every 60 seconds, indicating the alarm is powered and functioning correctly.
- Condição de alarme: The LED will flash rapidly along with the audible alarm.
- Modo de silêncio: The LED will flash every 10 seconds during the temporary silence period.
- Aviso sobre o fim da vida útil: The LED will flash twice every 60 seconds, accompanied by a chirp, indicating the unit needs to be replaced.
5. Manutenção
5.1 Testes regulares
Test your smoke alarm weekly to ensure it is operating correctly. Follow the instructions in Section 4.1.
5.2 Cleaning the Alarm
Dust and debris can affect the performance of your smoke alarm. Clean the alarm at least once a month by gently vacuuming the cover and vents with a soft brush attachment. Do not paint the alarm, as this can interfere with the sensor's ability to detect smoke.
5.3 Substituição no fim da vida útil
The First Alert SMI110 smoke alarm has a 10-year sealed battery and a 10-year operational life. After 10 years from the date of manufacture, the alarm will provide an end-of-life warning (two chirps and two LED flashes every 60 seconds). When this occurs, the entire unit must be replaced to maintain fire safety protection.
6. Solução De Problemas
| Problema | Possível causa | Solução |
|---|---|---|
| O alarme dispara frequentemente sem que se veja fumaça. | Alarme sonoro causado por ruídos de cozimento, vapor ou poeira. | Press the Test/Silence button. Relocate the alarm if nuisance alarms persist in a specific area. Clean the alarm regularly. |
| O alarme não dispara durante o teste. | Battery not activated, unit faulty, or end-of-life. | Ensure the yellow pull tab is removed. If recently activated, ensure it's properly seated on the mounting bracket. If the unit is past its 10-year life, replace it. If new and still not working, contact customer support. |
| Chirping sound every 60 seconds. | Aviso de fim de vida. | The alarm has reached the end of its operational life. Replace the entire smoke alarm unit immediately. |
7. Especificações
- Modelo: SMI110
- Marca: Primeiro Alerta
- Fonte de energia: 10-Year Sealed Lithium Battery (included)
- Tipo de sensor: Ionization (Precision Detection)
- Volume do alarme: 85 dB a 10 pés
- Dimensões do produto: 5.6"P x 5.6"L x 2"A
- Umidade operacional: 10-95% UR
- Cor: Branco
- Peso do item: 10.8 onças
8. Garantia e Suporte
The First Alert SMI110 Smoke Alarm is designed for a 10-year operational life, backed by its sealed 10-year battery. For specific warranty details, including coverage and duration, please refer to the documentation included with your product or visit the official First Alert website. If you encounter any issues not covered in this manual or require further assistance, please contact First Alert customer support.
Fabricante: Residência
Para obter recursos e suporte adicionais, você pode visitar o Loja First Alert na Amazon.





