Kidde CO detector with battery power, LEDs, test/reset vs First Alert CO710 Carbon Monoxide Detector with 10-Year Battery

Overall winner: First Alert CO710 Carbon Monoxide Detector with 10-Year Battery

Key Differences

Kidde (A) is battery-powered with 2 AA cells and shows digital CO levels with LED indicators, making it portable and easy to install. First Alert (B) includes a sealed 10-year lithium battery and a backlit digital display with temperature and an 85-dB alarm, offering longer service life but fewer display/indicator features

Kidde CO detector with battery power, LEDs, test/reset

Kidde CO detector with battery power, LEDs, test/reset

Kidde • ★ 4.4/5 • Budget

Portable carbon monoxide detector with battery power and LED indicators. Easy installation with no wiring, includes 2-AA batteries and a test-reset function; customers note reliable, quick setup and continuous readings

Pros

  • easy installation
  • no wiring required
  • battery powered during outages
  • LED indicators for power

Cons

  • requires 2 AA batteries
  • may rely on battery life for operation
  • no wired power option
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First Alert CO710 Carbon Monoxide Detector with 10-Year Battery

First Alert CO710 Carbon Monoxide Detector with 10-Year Battery

First Alert • ★ 4.3/5 • Budget

Digital-display carbon monoxide detector with 10-year battery and temperature readout. Provides continuous CO monitoring even during power failures; 85-dB alarm for dangerous levels. Customers note easy installation and accurate temperature readout

Pros

  • 10-year battery powered
  • digital backlit display
  • temperature readout
  • continuous CO monitoring during power failure

Cons

  • requires battery replacement after 10 years
  • 85-dB alarm may be loud for some environments
  • limited to CO detection only
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Head-to-Head

CriteriaWinner
Price First Alert
Durability First Alert
Versatility Kidde
User Reviews Kidde