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              Kidde-P4010ACSCO
Features:
- Photoelectric Sensing Technology 
- 10 -Year Sealed Lithium Battery Backup 
- Voice Messaging System 
- Ambient Light Sensor 
- Smart Hush® Control 
- Flashing LED Status Ring allows easy identification of current state of alarm 
Install Confidence:
- Voice Notification: Verbally announces “Fire!” or “Warning! Carbon Monoxide!” to help distinguish between threats. 
- Easy to Install: Backup battery automatically activates when the unit is attached to the mounting bracket 
- Photoelectric Sensor: Smoke sensor contains advanced photoelectric sensor that may detect visible particles (associated with smoldering fires) sooner than ionization alarms. 
- Ambient Light Sensing: Establishes Day/Night cycle and delays chirping during the night until the next Day cycle begins. 
- Test / Hush® Button: Tests alarm circuitry and activates Hush® feature to temporarily silence nuisance alarms for up to 10 minutes. End of Unit Life chirps can also be silenced. 
- End of Unit Life Warning: Alerts user the alarm is in need of replacement. 
- 10-Year Limited Warranty 
Features:
- Photoelectric Sensing Technology 
- 10 -Year Sealed Lithium Battery Backup 
- Voice Messaging System 
- Ambient Light Sensor 
- Smart Hush® Control 
- Flashing LED Status Ring allows easy identification of current state of alarm 
Install Confidence:
- Voice Notification: Verbally announces “Fire!” or “Warning! Carbon Monoxide!” to help distinguish between threats. 
- Easy to Install: Backup battery automatically activates when the unit is attached to the mounting bracket 
- Photoelectric Sensor: Smoke sensor contains advanced photoelectric sensor that may detect visible particles (associated with smoldering fires) sooner than ionization alarms. 
- Ambient Light Sensing: Establishes Day/Night cycle and delays chirping during the night until the next Day cycle begins. 
- Test / Hush® Button: Tests alarm circuitry and activates Hush® feature to temporarily silence nuisance alarms for up to 10 minutes. End of Unit Life chirps can also be silenced. 
- End of Unit Life Warning: Alerts user the alarm is in need of replacement. 
- 10-Year Limited Warranty