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| Product ⇅ | Price ⇅ | Battery Life (years) ⇅ | Alarm Sound Level (dB) ⇅ | Dimensions (inches) ⇅ | Display Type ⇅ | Sensor Range (feet) ⇅ | Digital Display ⇅ |
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Kidde Nighthawk KN-COB-B-LP
US
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£18.64 ≈ | 7 | 85 | 3.0 x 5.0 x 1.5 in | LED | — | ✗ |
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The Kidde Nighthawk KN-COB-B-LP is a battery-operated carbon monoxide alarm with an electrochemical sensor, dual status LEDs, a test/reset button, and an 85 dB alarm. It includes three AA batteries and can be mounted on a wall or placed on a tabletop, making it suitable for homes needing straightforward protection during power outages. ★ 适合人群适合初学者使用，因为它采用附带的三节 AA 电池供电，配有简单的测试/复位按钮和 LED 状态指示灯，并能发出清晰的 85 dB 警报，无需硬接线或数字显示屏。
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First Alert CO410
US
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£29.48 ≈ | 5 | 85 | 5 x 3.4 x 1.5 in | 背光数字 LED | — | ✓ |
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The First Alert CO410 is a battery-operated carbon monoxide alarm with an electrochemical sensor, an 85 dB alarm, and a backlit digital display showing current and peak CO levels. Its two replaceable AA batteries, single test and silence button, and easy-access battery compartment make it suitable for residential users who want straightforward installation and operation. ★ 适合人群该型号适合初学者，因为其背光数字 LED 显示屏可显示当前和峰值一氧化碳浓度，而单个按钮可轻松进行测试和静音操作，无需进行电气安装。 |
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Kidde KN-COB-DP2
US
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£24.78 ≈ | — | 85 dB（10英尺处） | 1.5 x 2.75 x 4.5 in | — | — | — |
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The Kidde KN-COB-DP2 is a plug-in carbon monoxide alarm with 2 AA battery backup, an 85 dB alarm, tamper resistance, and test/reset functionality. Its simple outlet installation and battery backup make it suitable for homeowners wanting basic protection during power outages. ★ 适合人群适合初学者，因为它可以直接插入标准插座，使用 2 节 AA 电池提供备用电源，并配备操作简单的测试/复位按钮和 85 dB 报警声。 |
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First Alert CO606
US
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£22.13 ≈ | — | 85 at 10 feet处 | 5 x 3.4 x 1.38 in | — | — | — |
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The First Alert CO606 is a plug-in carbon monoxide alarm with an electrochemical sensor, 9V battery backup, and an 85 dB alarm. Its single test and silence button makes it suitable for users who want simple operation without complicated settings. ★ 适合人群CO606适合初学者，因为它可以插入标准插座，在停电期间提供电池备用电源，并采用单一测试和静音按钮，而不是复杂的数字界面。 |
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First Alert CO600
US
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£18.41 ≈ | — | 85 | 4.8 x 1.5 x 3.3 in | 无显示屏 | — | ✗ |
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The First Alert CO600 is a plug-in carbon monoxide alarm with an electrochemical sensor, an 85 dB alarm, and a Test & Silence button. It is simple to install in a standard 120 V outlet and suits users who want basic monitoring without a digital display or frequent battery changes. ★ 适合人群这款探测器非常适合初学者，因为其插电式设计无需布线或更换电池，而单一的测试和静音按钮以及 85 dB 警报声让操作更加简单。 |
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