alarm-1-pack">first Alert CO400 carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
Protect your loved ones with this reliable carbon monoxide alarm, designed for effortless integration into any home. Its advanced electrochemical sensor delivers precise CO level detection, ensuring you're alerted as soon as concentrations become risky. Built too last for up to five years, the permanent sensor requires minimal maintenance, while the replaceable 9V battery guarantees continuous operation even during power outages. The unit’s intuitive test/silence button makes swift checks a breeze, and its loud 85 decibel alarm cuts through the noise to signal immediate danger. With no complex installation required, you can place it anywhere—on a shelf, nightstand, or use the optional wall mount—for optimal coverage.
For added peace of mind, the alarm features an audible and visual battery signal when it’s time to更换 the unit, preventing unexpected failures.The pull-down action chart provides a handy guide on how to respond if an alarm occurs,while the 5-year limited warranty and UL listing confirm its durability and compliance.First Alert’s reputation for home safety spans over six decades, making this alarm a trusted choice for protection across all home levels and bedrooms. Place one in each area to ensure complete detection, and rest easy knowing you’re safeguarding your family with cutting-edge technology.
Pros and Cons
Pros:
- Advanced electrochemical sensor for accurate CO detection
- Up to 5-year sensor lifespan with replaceable 9V battery
- Operates during power outages
- Intuitive test/silence button for easy verification
- Attractive, versatile design with optional wall mounting
- Audible/visual battery replacement alerts
- clear instructions and response guide available
- Comprehensive 5-year limited warranty and UL certification
- Trusted brand with decades of safety leadership
Cons:
- Requires battery replacement
- End-of-life chirp may wake sleeping occupants
- Alarm sequence must be confirmed post-test
| Feature | Specification |
|---|---|
| Sensor Type | Electrochemical CO Sensor |
| Battery | Replaceable 9V |
| Alarm Sound | Loud 85 dB Horn |
| sensor Lifespan | Up to 5 Years |
| Certification | UL listed |
Siterwell Carbon Monoxide Detectors, 10 Year Product Life CO Detector with LCD Digital Display and Sound Warning, ETL Listed, Carbon monoxide Detectors Battery Operated for Home School Office, 1-Pack
Experience unparalleled peace of mind with the latest innovation from SITERWELL,the only company in Asia equipped with a state-of-the-art laboratory certified for UL fire testing under both American and European standards. Backed by technical expert Isaac Papier and an investment of 15 million USD, this advanced detector clones the precision of a U.S. UL lab, ensuring flawless compliance with international safety regulations. The intuitive LCD display offers real-time carbon monoxide levels, while the 3-color LED indicator provides clear visual feedback—red for alerts, green for power, and yellow for faults. With a remarkable 10-year lifespan and a 3-year limited warranty, this detector is a cornerstone of home and commercial safety, offering silent yet powerful protection against CO dangers.
Designed for versatility, the device effortlessly adapts to any environment with flexible wall-mounted or free-standing installation, making it ideal for homes, schools, hotels, and garages.its high accuracy, certified by ETL standards and featuring an advanced electrochemical sensor, ensures swift detection of hazardous CO levels, triggering an alarm at 85dB within a 3-meter range. The built-in AA batteries provide continuous power for a decade, Skipping the hassle of frequent replacements. Rest assured, the product undergoes stringent quality control, and should any issues arise, SITERWELL stands ready to support its users with unwavering customer service.
Key benefits
- Unmatched Testing Standards - asia’s only UL-certified lab for American and European fire testing.
- High Accuracy & Reliability - ETL-certified with a precise electrochemical sensor for rapid CO detection.
- intuitive Monitoring - real-time CO levels on LCD with 3-color LED indicator for instant status.
- Extended Lifespan - 10-year operation with a 3-year warranty for lasting protection.
- easy Installation - Wall-mounted or freestanding adaptability for any space.
Considerations
- Battery Dependency - Requires occasional battery checks despite a 10-year lifespan.
- Complex Setup - Advanced testing capabilities may appeal primarily to commercial users.
| Feature | Details |
|---|---|
| Testing standards | UL (American & european), ETL |
| CO Detection | 85dB alarm within 3m |
| Lifespan | 10 years (with battery replacement) |
| Warranty | 3-year limited |
3in1 plug in Carbon Monoxide Detectors Built-in Rechargeable Backup Battery Plug&Play CO temp Humidity with 2.1'' HD Screen & Indicator 85dB Alarm for Home Hotel RV (1-Pack, White)
Keep your home and family safe with this versatile 3-in-1 carbon monoxide detector, featuring integrated temperature and humidity sensors. its plug-and-play design makes it effortlessly compatible with any standard US outlet, weather in your bedroom, kitchen, office, or hotel room, operating smoothly across 110V to 220V AC power sources. The intuitive 2.1'' HD screen provides real-time readings of CO levels, temperature, and humidity, updating every 2 seconds for accurate monitoring. paired with a built-in 1000 mAh rechargeable battery, it ensures 90-96 hours of continuous operation, perfect for handling power outages or use as a portable detector during short trips. With its UL2034 certified CO sensor and 85 dB alarm, this device offers comprehensive safety, alerting you to CO levels exceeding 50 ppm while also maintaining a comfortable environment by tracking temperature and humidity fluctuations.
Experience peace of mind in every room with this all-encompassing safety monitor. Its wide detection range covers CO levels from 0-999 ppm, temperature from 14°F to 122°F, and humidity from 0% to 95% RH, all displayed clearly on the high-definition screen. The audible alarm not only alerts you to hazardous CO levels but also ensures you're always aware of environmental conditions affecting your home. The rechargeable design eliminates the need for constant battery replacements, saving you money while providing reliable, uninterrupted protection. Whether it's safeguarding your family during the night or monitoring hospitality spaces like hotels, this detector offers a seamless, cost-effective solution for maintaining a safe and comfortable living or working environment.
Pros and Cons
Pros： Wide detection range for CO, temperature, and humidity; real-time HD display with 2-second refresh; 90-96 hours runtime on rechargeable battery; 85 dB loud alarm for CO alerts; plug-and-play design with US standard compatibility; portable use for short trips.
Cons： Battery life may be insufficient for prolonged power outages; reliance on audible alerts may require proximity to device; limited lifespan of electronic components over time.
| CO Detection Range | 0-999 ppm |
|---|---|
| Alarm Threshold | >50 ppm CO |
| Temperature Range | 14°F ~ 122°F |
| Humidity Range | 0 ~ 95% RH |
| Power Source | AC adapter (110V-220V) & 1000 mAh rechargeable battery |
| Product | Key Features | Pros | Cons |
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CO & Humidity Detector |
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Experience Innovation
First Alert CO400 Carbon Monoxide Detector
Compact and reliable with early warning technology.
Siterwell Carbon Monoxide Detectors
10-year product life with LCD display and sound warning.
3in1 Carbon Monoxide Detector
Plug-in design with rechargeable backup and HD screen.
Selecting the right CO detector ensures peace of mind. Each option offers unique features, from compact design to advanced monitoring, making home safety a smarter priority. Protect your family with reliable,smart technology.
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