Shop New Home Essentials Now
To see product details, add this item to your cart. You can always remove it later.
Shipper / Seller
Amazon.com
Amazon.com
Shipper / Seller
Amazon.com
Returns
30-day refund / replacement
30-day refund / replacement
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Gift options
Available at checkout
Available at checkout This item is a gift. Change
At checkout, you can add a custom message, a gift receipt for easy returns and have the item gift-wrapped
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.
  • First Alert 1046846 RV Approved Battery-Operated Smoke Alarm

First Alert 1046846 RV Approved Battery-Operated Smoke Alarm

4.5 out of 5 stars (63)
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice

To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Available at a lower price from other sellers that may not offer free Prime shipping.

Purchase options and add-ons

About this item

  • First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
  • Approved for use in recreational vehicles
  • Tamper resistant locking pin prevents battery removal
  • Hinged cover makes for easy battery replacements
  • Battery-operated alarm is easy to install and maintain

Product Description

FIRST ALERT 1046846 RV Approved Battery-Operated Smoke Alarm

Product information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Feedback

First Alert 1046846 RV Approved Battery-Operated Smoke Alarm


Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?

Price Availability
/
/
/
/
Please sign in to provide feedback.

Top Brand: First Alert

Highly Rated
100K+ customers rate items from this brand highly
Trending
100K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Customer reviews

4.5 out of 5 stars
63 global ratings

Customers say

Customers find the smoke alarm works well and is easy to install. The fit receives mixed feedback, with some customers saying it's perfect while others report installation issues.
AI Generated from the text of customer reviews

Select to learn more

8 customers mention functionality, 7 positive, 1 negative
Customers find that the smoke alarm works great, with one mentioning it functions well in an Airstream trailer.
Fit perfect and works greatRead more
Works fineRead more
Came as shown. Said it didn't come with battery but it did. Tests great first perfectly and looks great. Seems durable and installs easilyRead more
...Hopefully it's not as sensitive as the old one and will let me make toast (even with the ceiling vent on) and not scare the dogRead more
5 customers mention installation, 5 positive, 0 negative
Customers find the smoke alarm easy to install.
Easy to install in my Airstream travel trailer. I think it took me 5 minutes to replace the old one....Read more
This was exactly what I was looking for. It was easy to install and test. It was a good value for the money, and the safety brings peace of mind.Read more
This was easy to install in our camper. I would buy it again.Read more
...Tests great first perfectly and looks great. Seems durable and installs easilyRead more
5 customers mention fit, 2 positive, 3 negative
Customers have mixed experiences with how the smoke alarm fits, with some finding it perfect while others report issues with tightness on the base.
...x 1” detector I needed this for my camper that has a low profile area of 1.5” this doesn’t fit.Read more
This was a perfect fit for our Airstream. It was easy to install & looks great.Read more
...Oddly, unlike other smoke detectors, it doesn’t fit tightly onto the base....Read more
Fit perfect and works greatRead more
Product does NOT lock to the mounting plate (update: maybe it can)
1 out of 5 stars
Product does NOT lock to the mounting plate (update: maybe it can)
The description says it has two locking pins, one for the battery compartment and one to lock the detector onto the mounting plate. Although 2 locking pins are provided, there is only a locking hole (the one for the battery compartment). For the locking pin for the mounting plate the directions say "insert the locking pin into the lock located on the pivoting hinge of the battery compartment". NO SUCH LOCATION EXISTS! I cannot lock the detector to its mounting plate. Update: there seems to be a hole (see second photo) which a locking pin can drop into. It is NOT by the hinge. So this may work.
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

  • 5 out of 5 stars
    Easy installation, works in my Airstream
    Reviewed in the United States on May 14, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    Easy to install in my Airstream travel trailer. I think it took me 5 minutes to replace the old one. Hopefully it's not as sensitive as the old one and will let me make toast (even with the ceiling vent on) and not scare the dog

    One person found this helpful
    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 5 out of 5 stars
    RV rated. Works great!
    Reviewed in the United States on April 20, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    Works great!

    Old one was old and quit working

    One person found this helpful
    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 5 out of 5 stars
    Still early, but so far so good.
    Reviewed in the United States on April 26, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    So far so good. Longevity will tell.

    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 5 out of 5 stars
    You get what you ask for
    Reviewed in the United States on April 20, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    The unit replaced the original unit and even matched up to the holes.

    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 5 out of 5 stars
    Works so far
    Reviewed in the United States on March 2, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    had to replace our RV smoke alarm, same model, that is only 4 months old. Hope this one last longer….

    One person found this helpful
    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 5 out of 5 stars
    Shipped fast
    Reviewed in the United States on January 31, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.
    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 3 out of 5 stars
    Loose fit to mounting plate.
    Reviewed in the United States on May 14, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    I purchased for a travel trailer because it’s RV rated. How the fire alarm attaches to the mounting base is a bit sketchy and loose. Even with the locking pin installed. I think it’ll work, but it’s not nearly as solid as the original fire alarm. Keep your expectations low and read mounting instructions for locking pin installation.

    One person found this helpful
    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.
  • 4 out of 5 stars
    Easy instalation
    Reviewed in the United States on January 15, 2026
    Brief content visible, double tap to read full content.
    Full content visible, double tap to read brief content.

    Came as shown. Said it didn't come with battery but it did. Tests great first perfectly and looks great. Seems durable and installs easily

    Sending feedback...
    Thank you for your feedback.
    Sending feedback...
    Thanks, we'll investigate in the next few days.

Product Summary: First Alert 1046846 RV Approved Battery-Operated Smoke Alarm

From First Alert

4.5 out of 5 stars, 63 ratings

Customer reviews

400+ bought in past month

Price

No featured offers available

Other sellers

Other sellers

About this Item

  • First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
  • Approved for use in recreational vehicles
  • Tamper resistant locking pin prevents battery removal
  • Hinged cover makes for easy battery replacements
  • Battery-operated alarm is easy to install and maintain

Product Description

FIRST ALERT 1046846 RV Approved Battery-Operated Smoke Alarm

Important Information

Proposition 65 Warning for California Consumers

WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Feedback

Did you find this product summary feature useful?

Thank you for your feedback
Thank you for your feedback. You selected "Yes, it is useful"
Thank you for your feedback. You selected "No, it is not useful"
Product summary presents key information. Close to see all product details.