Best Kidde Model Kn-cosm-iba Hardwired Replacement in 2025
Updated on July 2025
#1
Recommended
20% Off
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- Alerts for smoke and carbon monoxide using one device.
- Hardwired for 120V AC with a 10-year battery backup, eliminating the need for battery changes.
- Advanced sensing technology minimizes false alarms caused by cooking, complies with UL standards.
- Voice alerts notify you of smoke or carbon monoxide presence for immediate action.
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- Alerts for smoke and carbon monoxide using one device.
- Hardwired for 120V AC with a 10-year battery backup, eliminating the need for battery changes.
- Advanced sensing technology minimizes false alarms caused by cooking, complies with UL standards.
- Voice alerts notify you of smoke or carbon monoxide presence for immediate action.
#2
Value for Money
31% Off
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- Hardwired smoke and carbon monoxide detector for reliable safety
- Includes a battery backup to ensure operation during power outages
- Voice warning alerts for both smoke and carbon monoxide detection
- Interconnectable feature allows multiple units to function together
- Sold in a convenient pack of 2 for enhanced coverage
- Compact design suitable for various installation locations
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- Hardwired smoke and carbon monoxide detector for reliable safety
- Includes a battery backup to ensure operation during power outages
- Voice warning alerts for both smoke and carbon monoxide detection
- Interconnectable feature allows multiple units to function together
- Sold in a convenient pack of 2 for enhanced coverage
- Compact design suitable for various installation locations
#3
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- Front battery pull tab enables simple battery activation without removing the alarm from the mount. The large base facilitates easier installation and protects the surface from dirt and imperfections. Pre-stripped wiring harness allows for quick connection without additional tools, while tinned wire strands enhance conductivity and secure connections.
- Features a large, centrally located Test/Hush button for simplified control. Dust cover prevents sensor contamination during construction, minimizing false alarms.
- Front-loading battery door provides easy access for battery replacement. Battery backup ensures continued operation during power outages. Can interconnect with up to 24 devices, including smoke and CO alarms, with detailed instructions available in the user guide.
- Alarm memory function indicates the initiating unit in an interconnected system through a red LED flash. Operates effectively in temperatures ranging from 40°F to 100°F.
- Tamper-resistant lock feature helps prevent theft of the alarm.
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- Front battery pull tab enables simple battery activation without removing the alarm from the mount. The large base facilitates easier installation and protects the surface from dirt and imperfections. Pre-stripped wiring harness allows for quick connection without additional tools, while tinned wire strands enhance conductivity and secure connections.
- Features a large, centrally located Test/Hush button for simplified control. Dust cover prevents sensor contamination during construction, minimizing false alarms.
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#4
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- Talking alarm identifies detected hazards for quicker responses
- Replaces the need for two units by functioning as a single device
- Safety feature prevents installation without batteries
- Test-reset button verifies alarm functionality with voice feedback
- Complies with Underwriters Laboratories (UL) safety standards
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- Talking alarm identifies detected hazards for quicker responses
- Replaces the need for two units by functioning as a single device
- Safety feature prevents installation without batteries
- Test-reset button verifies alarm functionality with voice feedback
- Complies with Underwriters Laboratories (UL) safety standards
#5
35% Off
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- Offers dual protection against fire and carbon monoxide with a photoelectric sensor.
- In case of fire, a red LED flashes and a verbal alert states 'Fire Fire' with sequential long beeps until reset.
- For carbon monoxide detection, the unit emits four short beeps followed by a verbal warning, repeating until reset.
- Low battery is indicated by a single chirp and a verbal warning, with an LED flash pattern changing after the first hour.
- Alarm memory feature alerts users with a blinking LED if smoke or CO was detected previously.
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- Offers dual protection against fire and carbon monoxide with a photoelectric sensor.
- In case of fire, a red LED flashes and a verbal alert states 'Fire Fire' with sequential long beeps until reset.
- For carbon monoxide detection, the unit emits four short beeps followed by a verbal warning, repeating until reset.
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#6
11% Off
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- Simultaneous smoke and carbon monoxide detection for enhanced safety.
- Interconnected alarm system for comprehensive home alerting.
- LED indicators provide visual alerts for smoke and CO detection.
- Advanced sensing technology reduces false alarms from cooking.
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- Simultaneous smoke and carbon monoxide detection for enhanced safety.
- Interconnected alarm system for comprehensive home alerting.
- LED indicators provide visual alerts for smoke and CO detection.
- Advanced sensing technology reduces false alarms from cooking.
#7
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- Intelligent sensing technology for accurate detection
- 10-year sealed lithium battery for reliable backup
- Voice messaging system for alerts
- Ambient light sensor adjusts to light
- Smart hush control reduces false alarms
- Electrochemical sensor for carbon monoxide detection
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- Intelligent sensing technology for accurate detection
- 10-year sealed lithium battery for reliable backup
- Voice messaging system for alerts
- Ambient light sensor adjusts to light
- Smart hush control reduces false alarms
- Electrochemical sensor for carbon monoxide detection
#8
20% Off
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- Detects smoke and carbon monoxide with a single device for efficient safety monitoring.
- HARDWIRED INSTALLATION: Powered by 120V AC, with a 10-year battery backup eliminating regular replacements.
- Advanced sensing technology reduces false alarms and meets safety standards.
- Voice alerts provide clear notifications for smoke or CO detection.
- Interconnects with multiple alarms for synchronized alerts throughout the property.
- Includes a 10-year limited warranty starting from activation date.
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- Detects smoke and carbon monoxide with a single device for efficient safety monitoring.
- HARDWIRED INSTALLATION: Powered by 120V AC, with a 10-year battery backup eliminating regular replacements.
- Advanced sensing technology reduces false alarms and meets safety standards.
- Voice alerts provide clear notifications for smoke or CO detection.
- Interconnects with multiple alarms for synchronized alerts throughout the property.
Read More
#9
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- Triggers an 85-decibel alarm with three long beeps and flashing red LED when smoke is detected.
- Powered by hardwired 120V AC with a 10-year battery backup to avoid battery changes.
- Utilizes advanced sensing technology to minimize false alarms from cooking, compliant with UL 217 9th Edition and FCC standards.
- Features clear voice alerts to specify the reason for the alarm, enabling quick responses.
- Conducts internal self-tests to ensure functionality, with a recommendation for weekly manual testing.
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- Triggers an 85-decibel alarm with three long beeps and flashing red LED when smoke is detected.
- Powered by hardwired 120V AC with a 10-year battery backup to avoid battery changes.
- Utilizes advanced sensing technology to minimize false alarms from cooking, compliant with UL 217 9th Edition and FCC standards.
- Features clear voice alerts to specify the reason for the alarm, enabling quick responses.
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#10
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- Dual sensor combines photoelectric and ionization technology for enhanced safety.
- Hush feature allows for temporary silencing of false alarms.
- Hardwired unit with battery backup ensures functionality during power outages.
- Red LED indicator flashes every 30-40 seconds to confirm proper operation.
- Test/Reset button checks electronic circuitry and horn; audible alarm reaches 85dB at 10ft.
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- Dual sensor combines photoelectric and ionization technology for enhanced safety.
- Hush feature allows for temporary silencing of false alarms.
- Hardwired unit with battery backup ensures functionality during power outages.
- Red LED indicator flashes every 30-40 seconds to confirm proper operation.
- Test/Reset button checks electronic circuitry and horn; audible alarm reaches 85dB at 10ft.
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