First Alert tabletop carbon monoxide detector CO710 — 10-year battery, digital CO & temperature display

The First Alert CO710 is a tabletop carbon monoxide detector with a built-in 10-year lithium battery, electrochemical sensor, and a backlit digital display for temperature and CO readings.

Designed to provide long-term, low-maintenance indoor CO monitoring, the CO710 combines an electrochemical sensing element (the widely accepted technology for accurate CO detection) with a clear digital readout and an audible 85-decibel alarm. It’s intended for use where a plugged-in or hardwired alarm isn’t practical — placed on dressers, nightstands, or countertops — and it includes features that make daily use and periodic testing straightforward.

How does the CO710 detect carbon monoxide and display readings?

The CO710 uses an electrochemical sensor that reacts to carbon monoxide molecules and translates that chemical response into an electrical signal the unit can interpret. The front-facing backlit digital display shows current CO concentration in parts per million (ppm), and an automatic Peak Level feature stores the highest concentration measured.

• Electrochemical CO sensor for reliable, industry-standard detection.
• Backlit digital display for current and peak CO levels and ambient temperature.
• Continuous monitoring with no need for external power sources.

What maintenance does the 10-year battery configuration require?

The CO710’s sealed 10-year lithium battery is built into the unit so you don’t replace batteries during the detector’s service life. The alarm is engineered to operate continuously for up to ten years and will emit an end-of-life chirp to indicate replacement is necessary after that period.

• Factory-installed 10-year lithium battery eliminates yearly battery changes.
• End-of-life signal alerts you when the unit needs replacing for continued protection.
• 10-year limited warranty covers defects with proof of purchase.

How loud is the alarm and how do I test or silence it?

The CO710 includes an 85-decibel horn intended to warn occupants of dangerous CO concentrations so they can respond quickly. A combined test/silence button lets you confirm the unit is operational and temporarily silence nuisance alerts while addressing the source.

• 85 dB audible alarm meets common safety expectations for household alerts.
• Test/silence button verifies function and provides temporary hush for noncritical alarms.
• Unit is UL-tested to recognized safety standards for residential CO alarms.

Where should I place this tabletop CO alarm in my home?

The CO710 is meant for tabletop or dresser placement in sleeping areas, hallways, basements, or any room where a plug-in option is undesirable. Place it on a level surface away from direct sunlight, extreme heat sources, or blocked airflow for the most accurate readings.

• Ideal for bedrooms, living areas, or anywhere a compact, non-wired detector is needed.
• Avoid sealed enclosures, vents, or locations near open flames and humid areas.
• Follow manufacturer placement guidance and local code recommendations for optimal coverage.

Who is this for? The First Alert CO710 is aimed at homeowners, renters, and property managers who want dependable, low-maintenance carbon monoxide monitoring without the need for wiring or routine battery changes. It’s a practical choice for rooms where a visible digital readout is helpful, for second homes, dorm rooms, or as an additional portable detector for temporary living spaces. If you prioritize an electrochemical sensor, a long-life sealed battery, and clear visual feedback of CO and temperature, this model offers a compact, UL-tested option with a decade-long service life and straightforward user controls.