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  • VIDEO
  • Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL
  • 25 Series Flush Mount ReplacementSafe T Alert by MTI Industries, Inc.

Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL

4.6 out of 5 stars (97)
$76.10
Get $10 off instantly: Pay $66.10 $76.10 upon approval for the Amazon Store Card. No annual fee.
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About this item

  • DUAL PROPANE & CO DETECTION – Patented Double-Duty Alarm upgrades single 12V propane alarms to detect both Propane Gas and Carbon Monoxide. Replaces Atwood Models 31013 & 31014 without modifications.
  • SPACE-SAVING COMPACT DESIGN – Flush mount mini size ideal for RVs with limited wall space. Case size: 4.5″W x 3.5″H x 1.25″D. Cutout size: 3.25″W x 2.5″H.
  • RELIABLE 12V POWER – Powered by 12v DC (108mA @ 12v DC) with low voltage warning. No batteries required, with power-conserving circuitry for long-term reliability.
  • ADVANCED SAFETY FEATURES – Alarm Mute button allows for ventilation, while rapid recovery sensor reactivates if propane or CO levels remain hazardous. Self-resetting for ongoing protection.
  • CERTIFIED FOR RV SAFETY – Meets RVIA/NFPA standards and conforms to UL STD 2034 RV / 1484 RV. Operates in extreme temperatures from -40°F to +158°F.
› See more product details

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This item: Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL
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Product description

MTI
SafeTBanner2
Weatherproof Safety
Safe T Alert - Mini Dual LP/CO Alarm - Surface Mount Black - 25-741-BL
Safe T Alert - Mini LP Gas Alarm - Surface Mount Black - 20-441-P-BL
Safe T Alert - Dual LP/CO Alarm - Surface Mount Black - 35-741-BL
Safe T Alert - Dual LP/CO Alarm - Flush Mount Black - 35-742-BL
Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL
Buying Options
Buying Options
Customer Reviews
4.4 out of 5 stars 55
—
4.5 out of 5 stars 293
4.6 out of 5 stars 2,330
4.6 out of 5 stars 97
Price — no data — no data $82.85 $49.95 $76.10
Dimensions 3.5" w x 2.5" h x 1.25" d 3.5" w x 2.5" h x 1.25" d 6" w x 1 7/8" h x 1 1/4" d 6.375" w x 2.875" h x 1.25" d 4.5" w x 3.25" h x 1.25" d
Universal Replacement no data no data no data no data no data
Direct Replacement ✓ ✓ ✓ ✓ ✓
Alarm Type Dual Propane/LP Only Dual Dual Dual
Product Family
About Brand

Product information

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Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL

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    Customer reviews

    4.6 out of 5 stars
    97 global ratings
    Sponsored

    Customers say

    Customers find this gas smoke fire alarm to be an exact replacement that's easy to install and fits perfectly. They appreciate its reliability, with one customer noting its dependable monitoring capabilities. The functionality receives positive feedback, with one mentioning it's particularly suitable for the 2019 Forest River Ultra lite model.
    AI Generated from the text of customer reviews

    Select to learn more

    16 customers mention replacement, 15 positive, 1 negative
    Customers find the smoke alarm to be an exact replacement, with one customer noting it was a "plug and play" installation.
    Fit perfectly in our 2020 Jayco 317 RLOK 5th Wheel. Exact replacement.Read more
    Perfect replacement- easy to install in RVRead more
    Plug and play replacement. Two butt splices done in minutes.Read more
    This Safe T Alert Mini Dual LP/CO Alarm was a perfect replacement for my old unit. It fits exactly, installed easily, and works flawlessly....Read more
    13 customers mention installation, 11 positive, 2 negative
    Customers find the smoke alarm easy to install.
    ...It was easy to install. Barry was a great representative and followed up with me. Thanks Barry for providing excellent customer service.Read more
    As described. Fit right in where the old one came out. Easy install.Read more
    ...It fits exactly, installed easily, and works flawlessly. I feel much safer knowing it’s reliably monitoring for both LP and CO. Highly recommend!Read more
    ...It was exactly what we needed and east to install.Read more
    11 customers mention fit, 10 positive, 1 negative
    Customers are satisfied with how the alarm fits, with one mentioning it matches their existing opening perfectly.
    ...Replacement was simple, two wires and 2 screws. A perfect fit. It’s something I hope never goes off....Read more
    There were other, cheaper options, but this one fit perfectly and was easy to wire and mount. Matching existing wires with new made connecting easy....Read more
    Fit perfectly in our 2020 Jayco 317 RLOK 5th Wheel. Exact replacement.Read more
    Fit wetl and dose the jobRead more
    8 customers mention reliability, 7 positive, 1 negative
    Customers find the smoke alarm reliable, with multiple reviews confirming it works flawlessly.
    ...Matching existing wires with new made connecting easy. Works as expected. Protection/safety reengaged.Read more
    Worked perfectly!Read more
    ...It fits exactly, installed easily, and works flawlessly. I feel much safer knowing it’s reliably monitoring for both LP and CO. Highly recommend!Read more
    ...Done, works like a new one.Read more
    5 customers mention functionality, 5 positive, 0 negative
    Customers find the smoke alarm works well, with one mentioning it's particularly suitable for the 2019 Forest River Ultra Lite model.
    great product. Easy to installRead more
    ...This model is the BEST for the 2019 Forest River Ultra lite but all we actually needed was to open our slideout and replace the smoke alarm battery! #...Read more
    ...Otherwise, it’s very nice.Read more
    Nice productRead more
    Selling 60 percent life at full price
    3 out of 5 stars
    Selling 60 percent life at full price
    Zero stars. This full-priced alarm arrived to me 2 full years into its 5 year limited life. The red date in the image is the date of manufacture, Apr29 2024. These things start alarming for replacement within a week of 5 years old. I have the same exact model I am replacing. Buy one at a store where you can verify the date of manufacture before purchase. Sent an email about this problem, we'll see if they do anything to resolve this... Update: the seller decided to refund about 40 percent of my purchase price. And was relatively easy to get ahold of. Bump to 3 stars.
    Hide
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    Top reviews from the United States

    • R&S D
      5 out of 5 stars
      Easy replacement for expiring unit
      Reviewed in the United States on May 13, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      There were other, cheaper options, but this one fit perfectly and was easy to wire and mount. Matching existing wires with new made connecting easy. Works as expected. Protection/safety reengaged.

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • rcknrbn
      5 out of 5 stars
      Easy replacement, simple installation
      Reviewed in the United States on May 26, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      We purchased a used travel trailer only to find the prior LP gas alarm had gone out (these are not recommended to last indefinitely). Replacement was simple, two wires and 2 screws. A perfect fit. It’s something I hope never goes off. I thought the price was a bit high but I can’t put a price on my family’s safety.

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • Karen
      5 out of 5 stars
      Easy install/replacement
      Reviewed in the United States on June 5, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      Perfect replacement- easy to install in RV

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • Gary H Mueller
      5 out of 5 stars
      Well designed
      Reviewed in the United States on June 8, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      great product. Easy to install

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • David
      5 out of 5 stars
      Exact replacement
      Reviewed in the United States on April 23, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      Worked perfectly!

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • K
      5 out of 5 stars
      Works/fits and great customer service
      Reviewed in the United States on June 1, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      This replacement fit perfectly and was easy to install. Seller was wonderful and I am very impressed with their customer service!

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • motobrice
      4 out of 5 stars
      works good
      Reviewed in the United States on May 31, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      it works but did not fit in the hole that is for it but did the job

      Sending feedback...
      Thank you for your feedback.
      Sending feedback...
      Thanks, we'll investigate in the next few days.
    • Tom NM
      5 out of 5 stars
      Exact replacement
      Reviewed in the United States on May 3, 2026
      Brief content visible, double tap to read full content.
      Full content visible, double tap to read brief content.

      This is an exact replacement of the old unit in my trailer. They say to replace it every five years and that is exactly how long the old unit lasted.

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

    Product Summary: Safe T Alert - Mini Dual LP/CO Alarm - Flush Mount Black - 25-742-BL

    From Safe T Alert

    4.6 out of 5 stars, 97 ratings

    Customer reviews

    200+ bought in past week

    Price

    One-time purchase: $76.10

    Purchasing options

    Other sellers

    Other sellers

    About this Item

    • DUAL PROPANE & CO DETECTION – Patented Double-Duty Alarm upgrades single 12V propane alarms to detect both Propane Gas and Carbon Monoxide. Replaces Atwood Models 31013 & 31014 without modifications.
    • SPACE-SAVING COMPACT DESIGN – Flush mount mini size ideal for RVs with limited wall space. Case size: 4.5″W x 3.5″H x 1.25″D. Cutout size: 3.25″W x 2.5″H.
    • RELIABLE 12V POWER – Powered by 12v DC (108mA @ 12v DC) with low voltage warning. No batteries required, with power-conserving circuitry for long-term reliability.
    • ADVANCED SAFETY FEATURES – Alarm Mute button allows for ventilation, while rapid recovery sensor reactivates if propane or CO levels remain hazardous. Self-resetting for ongoing protection.
    • CERTIFIED FOR RV SAFETY – Meets RVIA/NFPA standards and conforms to UL STD 2034 RV / 1484 RV. Operates in extreme temperatures from -40°F to +158°F.

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