Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 1 Pack
Best for
Best budget
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$49.00
Updated May 18, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, this is the budget single-unit pick — replaceable AA batteries instead of a sealed 10-year cell, combination smoke + CO sensing, and LED status indicators, at the lowest price in the lineup. The Amazon signal is the strongest in the pool by review volume (over 2,400 ratings at a 4.4-star average), and Home Depot and Walmart verified-purchase reviewers consistently call out the loud alarm and clear voice alerts. r/TheReviewCircuit posters specifically praise the loudness and the photoelectric sensor's tolerance of cooking smoke.
What reviewers liked
- Lowest price in the pool while still covering smoke + CO
- Highest Amazon review volume in the subcategory (over 2,400 reviews)
- Loud 85 dB alarm with clear voice alerts praised across retailer reviews
- Replaceable AA batteries instead of throw-away sealed-battery design
- Photoelectric sensing reduces cooking false alarms per community reports
Where it falls short
- No Wi-Fi, no app, no smart-home integration whatsoever
- Requires manual battery replacement — no 10-year sealed cell
- r/firealarms commenters flag Kidde detectors for false-alarm history
- No interconnect with other alarms
- Single-unit packaging is less economical than the multipack for whole-home installs
Across the reviewers we read, this is the budget single-unit pick — replaceable AA batteries instead of a sealed 10-year cell, combination smoke + CO sensing, and LED status indicators, at the lowest price in the lineup. The Amazon signal is the strongest in the pool by review volume (over 2,400 ratings at a 4.4-star average), and Home Depot and Walmart verified-purchase reviewers consistently call out the loud alarm and clear voice alerts. r/TheReviewCircuit posters specifically praise the loudness and the photoelectric sensor's tolerance of cooking smoke.
Like the multipack, this isn't 'smart' in the connected sense — no Wi-Fi, no app, no interconnect. r/firealarms's well-documented criticism of Kidde false-alarm behavior applies here too, and reviewers note you'll be swapping AA batteries periodically rather than replacing the whole unit at end of life. For a renter, a single-room application, or anyone who just wants UL-listed protection without paying for connectivity, the consensus is that this hits the price/performance sweet spot.
- 2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
- 24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)
- Easy installation mounting bracket included for quick installation in 4 orientations
- Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide
- 85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event
- Battery operated to provide reliable detection, even during power outages; two AA batteries included
- UL Listed with a 10-year limited warranty which begins when the alarm is powered on, if that date is unknown it should be assumed the alarm should be replaced.
Its alarm is loud — really loud, which is ideal for larger homes or heavy sleepers. I tested the device by simulating smoke (burning a piece of ...
The voice alerts were much more helpful than a generic beep, especially in the middle of the night. It feels like the device is practically ...
Trust tier reflects our editorial assessment of the source, not the individual quote. Hover for the rationale. See how we tier sources →
“Review Kidde Smoke & Carbon Monoxide Detector” · AA Battery ...
If the consensus convinced you
Check current price on Amazon
Pricing and availability change frequently. Tap through to confirm before buying.