Combination Smoke and Carbon Monoxide Alarm 5 Pack - Dual Sensor

Our review of this 5 pack combination smoke and carbon monoxide alarm finds it best for homeowners and landlords who want a simple, long-lasting protection solution for multiple rooms. The main reason to buy is the upgraded dual-sensor design and extended sensor life, which combine photoelectric smoke detection with an electrochemical CO sensor for faster, more accurate alerts over a longer service life. Installation is straightforward and the included batteries let you get each unit mounted and operational within minutes.

Key Features

• Dual sensors: Photoelectric smoke and electrochemical CO sensors detect smoke and carbon monoxide separately, improving early warning for both threats.
• 10-year sensor lifespan: The detector sensors are rated for up to 10 years, offering longer service life than many alternatives and reducing replacement frequency.
• LCD digital display: Real-time CO levels in PPM and battery status are shown on an LCD so users can monitor conditions at a glance.
• Battery-operated convenience: Each unit runs on included 3x1.5V AA batteries and is easy to install with the supplied bracket, screws, and anchors.
• Loud alarm and test mode: The >85 dB alarm at 3 meters is designed to wake occupants, and a test/silence function lets users verify operation or mute false alarms temporarily.
• UL-tested safety: The product has UL217 and UL2034 test reports from an ILAC ISO 17025/NRTL lab, providing documented standards compliance.

Who It's For

This 5 pack is ideal for families, landlords, and property managers who need multiple detectors to cover bedrooms, common areas, and rental units without complex wiring. The battery operation and included batteries make it useful where hardwiring is not available, and the LCD readout suits users who want clear CO readings rather than a simple LED indicator.

Those who prefer hardwired detectors with interconnected alarm networks or who need a unit with rechargeable internal batteries should look elsewhere. Also, buyers sensitive to occasional aging noise may want to inspect a single unit first, since some owners reported crackling after extended use.

Pros & Cons

Pros

• Combined photoelectric smoke and electrochemical CO sensors for reliable dual hazard detection.
• Long sensor lifespan (up to 10 years) reduces replacement frequency and maintenance.
• Clear LCD showing CO level and battery status helps with quick condition checks.
• Easy battery-powered installation with included batteries and mounting hardware.

Cons

• Some users report occasional noise issues after long-term use, which can be a nuisance.
• Battery replacement is required over time; it is not a hardwired or rechargeable option.

Specifications

Our Verdict

This 5 pack combination smoke and carbon monoxide detector is a practical choice for covering multiple rooms with reliable dual-sensor protection and a long sensor life. It offers clear CO readouts, loud alerts, and easy installation, making it good value for homeowners and landlords who need straightforward, batteryoperated safety devices.

Frequently Asked Questions

How long do the sensors last?
The sensors are rated for up to 10 years, which is longer than many standard detectors.

Are batteries included and how long do they last?
Yes, 3 AA batteries are included with each unit and battery life is advertised up to five years under normal use; free lifetime after-sales battery replacement is offered by the brand.

Does the unit show CO levels?
Yes, the LCD displays real-time CO in PPM and also shows battery status for easy monitoring.