Search  for anything...

AEGISLINK Wi-Fi Combination Smoke and Carbon Monoxide Detector Compatible with TuyaSmart & Smart Life App, SC-WF240, 3 Pack

  • Based on 620 reviews
Condition: New
Checking for the best price...
$64.98 Why this price?
Save $35.01 was $99.99

Buy Now, Pay Later


As low as $10.83 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Jul 31 – Aug 1
Order within 2 hours and 19 minutes
Available payment plans shown during checkout

Style: 3-Pack(Wi-Fi Linked)


Features

  • Easily turn off unwanted alarms with the TuyaSmart or Smart Life app; no need to try and reach the silence button with a broomstick or by climbing up a ladder
  • This smart smoke and carbon monoxide alarm continuously checks its sensors, battery status and Wi-Fi connection, sending you real-time push alerts if a problem occurs or a threat is detected, allowing you to act on time to keep your property and home safe, 24/7
  • Equipped with a photoelectric smoke sensor and an electrochemical CO sensor, this combination alarm provides reliable protection against both smoke and CO; its advanced photoelectric technology allows it to detect smoke more accurately than previous generations of sensors
  • When the device is triggered, its siren exceeds 85 dB at 10 ft (3 m) to ensure that it wakes up even the deepest sleepers
  • This device only measures 5 1.4 in (128 34.7 mm) and comes in a thin and light design; with the accessories included, it is easy to install, without the need to hire an electrician

Brand: AEGISLINK


Style: 3-Pack(Wi-Fi Linked)


Power Source: Battery Powered


Color: White


Product Dimensions: 5.03"D x 1.36"W x 5.03"H


Item Weight: 3.2 ounces


Alarm: Audible


Compatible Devices: Smartphone


Sensor Type: Photoelectric, Electrochemical


Material: Flame Retardant ABS


Brand: ‎AEGISLINK


Style: ‎3-Pack(Wi-Fi Linked)


Power Source: ‎Battery Powered


Color: ‎White


Product Dimensions: ‎5.03"D x 1.36"W x 5.03"H


Item Weight: ‎3.2 ounces


Alarm: ‎Audible


Compatible Devices: ‎Smartphone


Sensor Type: ‎Photoelectric, Electrochemical


Material: ‎Flame Retardant ABS


Number of Items: ‎3


Manufacturer: ‎AEGISLINK


Part Number: ‎SC-WF240


Item model number: ‎SC-WF240


Batteries: ‎3 CR123A batteries required. (included)


Shape: ‎Circular


Voltage: ‎3 Volts


Installation Method: ‎Screw-In


Type of Bulb: ‎LED


Coverage: ‎215-430sq.ft


Mounting Type: ‎Protruding


Included Components: ‎1 X User Manual, 3 X CR123A Replaceable Battery, 1 X Parts Kit, 3 X Smart Smoke And Carbon Monoxide Detector SC-WF240, 3 X Mounting Bracket


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Lithium Metal


Warranty Description: ‎Includes 60-day return, 5-year warranty, and lifetime tech support


Date First Available: February 7, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 31 – Aug 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Highly recommend
Style: 1-Pack(Wi-Fi Linked)
Purchased this smoke alarm for my elderly dad who had memory issues. His previous smoke alarm that had a built in battery. His apartment is usually very hot in the winter time because they give a lot of heat in his building during the winter. Which use to cause his previous smoke detector to go off. My dad would get confused due to the beeping and being unable to make the detector stop beeping. Due to his condition I purchased this smoke detector that battery can be removed. Now he’s able to take the battery out and put it back in which makes it easier for him to use. The smoke alarm works well and you can link it to your WiFi, was very easy to install. ... show more
Reviewed in the United States on January 21, 2025 by DAMARIS M.

  • 100% recommend hit saveed my family
Style: 1-Pack(Wi-Fi Linked)
literally saved my family’s life! My daughter was living in military housing on a military base, which had carbon oxide and fire detectors already throughout the house. After a weekend of visiting, I decided to purchase this carbon dioxide alarm from Amazon. Two weeks later, there was a leak and it’s the only alarm that went off. He literally saved my daughter and my grandson 100% recommend. ... show more
Reviewed in the United States on June 30, 2025 by Kristi S

  • Prob the best budget ones currently out there with some cons
Style: 1-Pack(Wi-Fi Linked)
Cons 1. I bought 11 and 1 failed on me after 8 months, just keeps going off after 5-10 minutes for no reason. The others are working fine. 2. Not interconnected (meaning if one goes off then it sets them all off). 3. Does have a noticeable flash of light every few minutes in the dark, but it's not too bad. Pros 1. Great price compared to others 2. Easy to mount and setup, not connected to wires, only has a battery 3. Smart Life app is good and easy to work with 4. Can quicky see which alarm goes off and mute/turn off if needed 5. Smoke and CO2 (it is recommended to have CO2 detection by any gas appliance) 6. Easy to change out CR123 battery, batteries not too expensive 7. Let’s you know when the batteries need replaced 8. Does its own self-test monthly (I did turn off the notifications, was annoying after a while) 9. Combined with webcams in all the rooms, this is very helpful 10. Cheap enough to replace bad ones every few years (although they should last 10 years) ... show more
Reviewed in the United States on January 17, 2025 by Jason Wolff Jason Wolff

  • Safety at your fingertip!
Style: 1-Pack(Wi-Fi Linked)
We love theses.. in all our homes. The security of knowing your family is safe and secure with updates through your phone or email.
Reviewed in the United States on June 11, 2025 by Andrea Reissman

  • Not working well loud beeps and wifi broke
Style: 1-Pack(Wi-Fi Linked)
Got two they both keep making one single loud beep at random time of the day/night and they don’t stay connected to the wifi app
Reviewed in the United States on June 15, 2025 by Sacha G.

  • Decent smoke detectors
Style: 1-Pack(Wi-Fi Linked)
Set up and installation was easy. I have a separate wireless router with a non-complicated Wi-Fi password. I found that long or special character passwords don't play well with wireless IoT devices. I got three of these smoke/CO detectors to replace my existing that were tied into 120VAC with tandem wiring. The AEGISLINK Wi-Fi do not tie together nor do they integrate with Alexa directly. I had some left over devices that I used to get Alexa to monitor the activation of either smoke or CO through Smart Life app and Yolink to set off a siren. Alexa would speak through-out the house and turn on all bedroom lights. I will now sit back and see how these detectors hold up. The display is not as detailed as in the pictures. It takes nine (9) minutes for the unit to reset and the Smart Life app to return to normal. You can silence the alarm on the detector with the app, but you cannot perform a test with the app. That is done by pushing the button on the detector itself. I used can smoke to test my detectors. ... show more
Reviewed in the United States on February 11, 2023 by starman

  • Good but, does not read accurately below 30ppm
Style: 1-Pack(Wi-Fi Linked)
Overall I believe it is a good product. I like that I have a digital read out of ppm. Nice to be able to use app to monitor. And can't go wrong for the price. It does show levels that are considered dangerous but on lower end does not report properly, which can be problematic in catching a problem before it becomes more serious. I attached a pic of multiple AegisLink Smoke/CO detectors reading at 0ppm and another more sensitive CO sensor showing 26ppm. These are some stats that can show some concern for long term exposure: - 0-9 ppm CO: no health risk; normal CO levels in air. - 10-29 ppm CO: problems over long-term exposure; chronic problems such as headaches, nausea - 30-35 ppm CO: flu-like symptoms begin to develop, especially among the young and the elderly. - 36-99 ppm CO: flu-like symptoms among all; nausea, headaches, fatigue or drowsiness, vomiting. - 100+ ppm CO: severe symptoms; confusion, intense headaches; ultimately brain damage, coma, and/or death, especially at levels 300-400+ ppm The WHO recommended limits are: - 9-10 ppm for no more than 8 hours - 25-35 ppm for no more than 1 hour - 90-100 ppm for no more than 15 minutes In these cases if there is a constant CO level of 26ppm as in the attached pic, it could cause some health problems and these detectors would not necessarily show any CO in the air. To be fair, I do not believe this issue is only related to AegisLink but in general many of the CO detectors on the market fall into this category. It is just something to be wary about. The other less important negative was that one battery came dead out of the package. Not a huge deal, but not the 10year life span as promised. I will need to monitor all of the sensors to ensure others do not have similar problems. Although they do come with a notification when battery life is ending which is a nice feature to make sure you are aware they need to be replaced. Overall I like the product, and would probably buy again, but just be cautious about the readings. ... show more
Reviewed in the United States on November 3, 2023 by Izzy Izzy

  • Peace of Mind
Style: 1-Pack(Wi-Fi Linked)
We love how easy this was setup in our SmartLife App. It runs regular self tests and the report is sent to our phones.
Reviewed in the United States on April 9, 2025 by Courtney

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...