First Alert
0 ratings
First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
genuine image
First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm
Item #: 189337866

First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm

82% of respondents would recommend this to a friend

Item #: 189337866

XCD 175

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

0 ratings Write a review
In stock
us Imported from USA store

QTY:

Order now and get it around Sunday, September 20
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

10-Year Battery Life
This alarm includes a sealed 10-year battery, eliminating the hassle of frequent replacements while ensuring reliable operation for a full decade.
Slim Profile
Designed with a slim profile, this alarm integrates seamlessly into any home decor, minimizing its visual footprint without compromising safety or functionality.
Combination Sensor
Equipped to detect both smoke and carbon monoxide, this alarm provides comprehensive protection, ensuring safety from multiple indoor hazards in one compact unit.

Product Details

Shop First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm online at a best price in Saint Lucia. B0CJMMVST2
BrandFirst Alert
Model NumberSMCO210
Unit Count1 Count
Number of Items1
ManufacturerResideo
UPC029054022233
Item Type NameCombination Alarm
Mfr Part NumberSMCO210
Power SourceBattery Powered
AlarmCombination Alarm
Sensor TypePhotoelectric
Operating Humidity10-95% RH
Product StylePrecision Detection
ColorWhite
Item Dimensions D x W x H5.67"D x 5.67"W x 1"H (14.4 x 14.4 x 2.5 cm)
Item Weight6.56 ounces (185.98 grams)
Enclosure MaterialPlastic
StylePrecision Detection
Product Dimensions (L x W x H)5.67"D x 5.67"W x 1"H (14.4 x 14.4 x 2.5 cm)
MaterialPlastic

Dangerous Goods

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

Who Should Buy?

Suitable For
  • Homeowners

    Ideal for homeowners wanting a reliable smoke and CO detection solution with a long-lasting battery and slim design.

  • Renters

    Perfect for renters seeking easy installation and maintenance-free operation without worrying about battery replacements.

  • New Parents

    Essential for new parents who prioritize safety in the home with a dual function for smoke and CO detection.

Not Suitable For
  • Frequent Movers

    Not suitable for individuals who move often, as it is hardwired and sealed, making relocation difficult.

Product Description

First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are the main features of the First Alert SMCO210?

    Answer: The First Alert SMCO210 is designed with a slim profile for discreet installation. It combines both smoke and carbon monoxide detection in one device, ensuring comprehensive safety. This model features a sealed battery designed to last for the length of the alarm's life, eliminating the need for battery replacements. With an integral safety light and an easy-to-read battery status indicator, users can monitor the alarm’s performance effectively.
  • Question: How does the combination smoke and carbon monoxide alarm work?

    Answer: The First Alert SMCO210 uses advanced sensors to detect smoke and carbon monoxide levels in your home. When smoke is detected, the alarm emits a loud sound to alert occupants. Similarly, if dangerous levels of carbon monoxide are present, the alarm triggers to notify users of the potential hazard. This dual functionality ensures that you are warned against both smoke and carbon monoxide dangers, providing peace of mind in daily life.
  • Question: What is the installation process for the First Alert SMCO210?

    Answer: Installing the First Alert SMCO210 is straightforward. Simply mount the device on a wall or ceiling, ideally outside bedrooms or in hallways, for maximum coverage. The unit has minimal wiring requirements due to its sealed battery, making it a great option for renters or those who prefer a quick setup. Once installed, it begins monitoring the air for threats immediately, enhancing your home’s safety.
  • Question: How do I test the alarm to ensure it is working properly?

    Answer: To test the First Alert SMCO210, press the test button on the unit, which should sound the alarm if functioning correctly. It's recommended to conduct this test monthly to ensure both the smoke and carbon monoxide detectors are active. Regular testing not only confirms functionality but also helps familiarize households with the sound, creating an effective safety response in case of an emergency.
  • Question: What does the slim profile design of the SMCO210 offer?

    Answer: The slim profile of the First Alert SMCO210 is designed for unobtrusive installation while maintaining essential functionality. This compact design fits easily in various spaces without obstructing decor or furniture placements. It’s an ideal option for those who want advanced safety features without compromising on aesthetics, making it suitable for modern homes.
  • Question: Is the First Alert SMCO210 suitable for all types of homes?

    Answer: Yes, the First Alert SMCO210 is suitable for various types of homes, including apartments, condos, and single-family residences. Its dual smoke and carbon monoxide detection capabilities make it a universal safety device. Given its minimal installation requirements and compact size, it can easily be added to existing safety setups, enhancing protection across different living environments.
  • Question: What lifespan can I expect from the First Alert SMCO210?

    Answer: The First Alert SMCO210 is designed to provide reliable performance over its lifespan with a sealed battery that is intended to last for the entire life of the alarm. Users can expect approximately a decade of dependable functionality before the unit should be replaced. This extended lifespan minimizes maintenance concerns, making it a practical choice for proactive safety.
  • Question: How do I know when it’s time to replace the alarm?

    Answer: The First Alert SMCO210 includes an end-of-life signal that alerts users when replacement is required, typically after about a decade of operation. The signal usually consists of a chirping sound at intervals, indicating that it is no longer reliable. Regular checks of the alarm's performance and a note on your calendar can help ensure you replace the unit when needed, keeping safety as a priority.
  • Question: What should I do if the alarm goes off?

    Answer: If the First Alert SMCO210 goes off, immediately assess the situation. Evacuate all occupants from the space, and if smoke or carbon monoxide is suspected, call emergency services. It’s essential to have a safety plan in place that includes escape routes and designated meeting points outside the home to ensure everyone’s safety. Regular drills can prepare family members for quick responses in emergencies.
  • Question: Where can I buy the First Alert SMCO210 in Saint Lucia?

    Answer: You can purchase the First Alert SMCO210 at Ubuy, a trusted online retailer that specializes in home safety devices. Ubuy offers a wide selection of First Alert products, ensuring that you can find the right alarm to meet your safety needs.

First Alert Combination Smoke & Carbon Monoxide Detectors SMCO210 Editorial Review

First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm | SMCO210 Slim Profile Design, Sealed Battery delivers essential safety in a compact design. This combination alarm features a photoelectric sensor for enhanced detection and a long-lasting sealed battery that avoids the hassle of frequent changes. However, user experiences indicate a common issue with false alarms, particularly during the night, causing distress. This has led some users to feel frustrated, to the point of discarding the alarms. While some customers appreciate the easy installation and space-saving design, consistent functionality seems to vary. It’s a product that certainly aims to enhance safety but has raised concerns over reliability in practice.

Customer Reviews & Ratings

1 customers ratings
  • 5 Star
    100%
  • 4 Star
    0%
  • 3 Star
    0%
  • 2 Star
    0%
  • 1 Star
    0%

Review this product

Share your thoughts with other customers

Pros

  • Long-lasting sealed battery up to 10 years
  • Compact slim profile design
  • Easy installation process
  • Photoelectric sensor for precision detection
  • Lightweight and easy to handle

Cons

  • Occasional false alarms reported by users

Platform Trust & Buyer Confidence

trustpilot logo
4.2/5 9477 reviews
Read reviews
JK
Jasmin
Verified buyer

“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
AG
Anke
Verified buyer

“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
H
Hazel
Verified buyer

“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer

“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
AC
Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

XCD 175

Order now and get it around Sunday, September 20

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • 10-Year sealed battery for no replacements or low battery chirps
  • Meeting new industry standards with Precision Detection advanced sensing technology
  • Slim profile design, half the depth of a standard alarm
  • End-of-life warning for replacement alert
  • Convenient and reliable protection
  • Easy installation

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.