KIDDE 21027451 Plug Carbon Monoxide Alarm Battery Up 047871257652 2PK

( Brand: Kidde ), ( Manufacturer Part Number: 21027451 ), ( Part Type: Plug Alarm Battery ), ( UPC: 047871257652 )

Review KIDDE 2pk Plug In Carbon Monoxide Alarm Battery Back up New

Kidde 21027451 2-Pack Plug-In Carbon Monoxide Alarm with Battery Backup

The Kidde 21027451 2-Pack Plug-In Carbon Monoxide Alarm with Battery Backup is a crucial safety device designed to protect your home and family from the hidden danger of carbon monoxide (CO) gas. This 2-pack alarm system offers peace of mind knowing that you have an early warning system in place to detect even the smallest traces of CO gas.

Each alarm in the pack comes with a sleek, modern design that features a plug-in power base with a test/silence button on the front for easy access. The alarms are designed to be user-friendly, with a digital display that shows the current CO level and the status of the battery and power sources.

One of the most significant features of the Kidde 21027451 Plug-In Carbon Monoxide Alarm is its battery backup system. In the event of a power outage, the battery will keep the alarm functioning, ensuring that you are alerted to any CO gas buildup, even without a power source. The battery is designed to last up to 5 years, making it a long-lasting solution for your home safety needs.

The Kidde 21027451 Plug-In Carbon Monoxide Alarm is easy to install and maintain. Simply plug the alarm into a standard electrical outlet, and it will begin detecting CO gas levels in the surrounding area. The alarm will sound an alarm when CO levels reach 70 parts per million (ppm), giving you ample time to evacuate your home and seek fresh air.

This 2-pack alarm system is an essential addition to any home safety system. With its reliable battery backup, easy installation, and digital display, the Kidde 21027451 Plug-In Carbon Monoxide Alarm with Battery Backup is an investment in the safety and well-being of your family.

- Digital display shows CO level and power/battery status

- Plug-in power base with test/silence button

- Battery backup system for power outages

- Alarms sound when CO levels reach 70 ppm

- Easy to install and maintain

- Long-lasting battery (up to 5 years)

- Sleek, modern design

Dimensions: 2.75 inches (H) x 4.5 inches (W) x 1.5 inches (D)

Weight: 6.4 ounces

Power Source: Plug-in power base with battery backup

Battery: 9V Alkaline battery (included)

Warranty: 5-year limited warranty

WARNING: Install carbon monoxide alarms in accordance with local and national codes. Do not install near fuel-fired appliances, water heaters, or furnaces. Do not install in garages, basements, crawlspaces, or areas with high humidity or moisture. Always follow the installation instructions provided with the product.

Pros and Cons of Buying Kidde 21027451 2-Pack Plug-In Carbon Monoxide Alarm with Battery Backup

a. Affordable: The Kidde 21027451 2-Pack Plug-In Carbon Monoxide Alarm with Battery Backup is budget-friendly, making it an excellent choice for those who want to ensure their safety without spending a fortune.

b. Easy Installation: These alarms are designed to be easily installed. They simply plug into a standard electrical outlet and do not require professional installation or hardwiring.

c. Battery Backup: The battery backup feature ensures that the alarms continue to function even during power outages, providing an added layer of safety.

d. Digital Display: The digital display on the alarms makes it easy to read the CO levels, battery status, and the date when the last time the alarm was tested.

e. Test/Reset Button: The test/reset button allows users to test the alarms and reset them if necessary without the need for tools or technical expertise.

a. Limited Placement Options: Since these alarms are plug-in models, they can only be placed near electrical outlets. This may limit the number of optimal placement options in larger homes or areas with limited outlets.

b. False Alarms: Some users have reported false alarms with these carbon monoxide alarms, which can be frustrating and may lead to a lack of trust in the device.

c. Sensitivity: The sensitivity of the alarms may vary, and some users have reported that they are too sensitive, triggering false alarms from everyday activities or minor CO levels.

d. Loudness: Some users have mentioned that the alarms are not loud enough to effectively alert everyone in the household in case of an emergency.

e. No Wireless Connectivity: These alarms do not have wireless connectivity, which means they cannot be monitored or connected to other smart home devices.

The Kidde 21027451 2-Pack Plug-In Carbon Monoxide Alarm with Battery Backup offers several advantages, such as affordability, easy installation, battery backup, and a digital display. However, it also has some drawbacks, like limited placement options, potential false alarms, sensitivity issues, and lack of wireless connectivity. Ultimately, if you're looking for a budget-friendly, easy-to-install carbon monoxide alarm with battery backup, this product could be a suitable choice for you. However, if you require more advanced features, such as wireless connectivity or greater sensitivity, you might want to consider other options on the market.

Details:

part #: 21027451 prices

• $12.00-$164.99

specifications hoimprovo:

• brand: Kidde
• mpn: 21027451
• part type: Plug Alarm Battery
• upc: 047871257652

shipping hoimprovo:

• cost: $0.00
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• carrier: FedEx
• transit: 2-6 Days

seller hoimprovo:

• city: Anderson, Indiana
• rating: 99.9%
• # reviews: 48842

general hoimprovo:

• condition: New
• Home Garden > Home Improvement > Other Home Improvement

offer hoimprovo:

• sold: 0
• started: March 31, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 5

payments hoimprovo:

• wallet: Google-pay
• credit card: Diners-club
• other

returns hoimprovo:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller
• method: Money back

Kidde 21027451 Is Similar To:

• 21006373 Kidde Smoke Detector Alarm Hardwire Fire Sensor Battery Backup Pack (43% similar) The Kidde I12040 contractor 6 pack is a master that contains individual units. 7PRODUCT height in. These alarms are 120-VOLT hardwired ionization smoke alarm with 9-VOLT battery backup and hush feature detectors have the ability to function as single units or in an interconnected system 5PRODUCT ...(January 10th, 2019)
• Kidde 30cua10-v Combination Smoke Carbon Monoxide Alarm ob8581 Tc (49.6% similar) Included:: full set, not included: any other accessories not pictured. The box is distressed...(September 22nd, 2025)
• Kidde Jyy-451 Jyj-451 Combo Interlinked Smoke And Carbon Monoxide Alarm Lcd Display Battery (56.1% similar) Brand new JYJ-451 combo interlinked smoke carbon monoxide alarm with LCD digital display. Designed for battery operation, making installation quick and easy with no hard wiring required. This 2-IN-1 safety alarm detects both smoke and carbon monoxide, helping protect your home family...(March 3rd, 2026)
• Kidde 21029715 3pk 10-year Worry-free Battery Carbon Monoxide Detector Digital Display (47.8% similar) Part #: Kidde 21029715 for sale...(March 31st, 2026)