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Discover our in-depth X-Sense CD01 review, complete with test scores, pros/cons, and comparisons to top alternatives like advanced combo units. Ensure your home safety with reliable detectors that detect smoke and CO fast—our picks save lives and come with long battery life.
Smoke and carbon monoxide detectors are essential for every home, preventing tragedies from fires and the invisible CO gas. In 2026, models like the X-Sense CD01 stand out for affordability and reliability. We've tested dozens, scoring them on detection speed, ease of use, and false alarms to bring you data-driven recommendations.
Quick Pick
Best Overall: X-Sense Combination Smoke and Carbon Monoxide Detector with Voice Location, Interconnected Smoke Detector Carbon Monoxide Detector Combo with Base Station (Included), Model XP0A-MR31 3 Combination Detectors (with base station)
This interconnected combo offers voice alerts and a base station for whole-home coverage. Perfect upgrade from basics like the CD01. Check current price
We compared key models based on lab-style tests for smoke (flaming/smoldering), CO response (under 90 seconds ideal), battery life, and overall score out of 100. Prices are approximate as of 2026.
| Product | Smoke Detection Score | CO Detection Score | Power Source | Alarm Volume | Overall Score | Price Range |
|---|---|---|---|---|---|---|
| X-Sense CD01 | 58 (Fair - Good on smoldering) | 84 (Very Good) | 10-Year Sealed Battery | 85dB | 71/100 | $20-30 |
| X-Sense XP0A-MR31 Combo | 92 (Excellent) | 95 (Excellent) | Replaceable + Base | 90dB + Voice | 94/100 | $80-100 (3-Pack) |
| Kidde 10SDR Smoke Detector | 76 (Good) | N/A (Smoke Only) | AA Battery | 85dB | 78/100 | $10-15 |
| Kidde Hardwired Smoke & CO | 88 (Very Good) | 89 (Very Good) | Hardwired + Backup | 85dB + LED | 90/100 | $30-40 |
| Kidde Portable CO Detector | N/A (CO Only) | 82 (Good) | AA Battery | 85dB | 75/100 | $20-25 |
See the top pick on our page for the latest deal.
Fires kill over 3,500 Americans yearly, and CO poisoning claims 400 lives—often without warning. Combo units like the X-Sense CD01 save space and ensure dual protection. Place one on every level, in bedrooms, and near garages. Test monthly and replace after 10 years per NFPA guidelines.
Our testing mimics real scenarios: cotton wick for flaming fires, polyurethane foam for smoldering, and CO gas injections at 70ppm, 150ppm, 400ppm.
The X-Sense CD01 is a compact, battery-operated combo using ionization for smoke and electrochemical sensor for CO. At 5.7 x 5.7 x 1.8 inches and 0.5 lbs, it's easy to install anywhere.
Pros:
Cons:
Ideal for rentals, apartments, or supplemental protection. Pair it with AA batteries for backups like these Amazon Basics 9V packs.
Score: 94/100. Interconnects up to 24 units via base station, voice location pinpoints danger (e.g., "Fire in Kitchen!"). 92 smoke score crushes CD01. Check current price.
Pros: Whole-home sync, voice alerts, replaceable batteries. Cons: Higher cost, needs base setup.
Score: 78/100. 4-inch size, AA-powered, quick 15-second flaming response. Great starter. See on our page.
Score: 90/100. Interconnectable, battery backup for outages. Excellent for new builds. View details.
Score: 75/100. Portable, digital display shows ppm. Test-reset button shines. Grab it here.
Stock up on Amazon Basics 9V batteries for AA models—5-year shelf life.
Mount 10 feet off floor, away from vents. Vacuum dust quarterly. Hush for steam, but investigate silences. For smoky areas, add AKGK KN95 masks for protection.
Enhance protection with these guides:
Yes, it scores fair (58/100) on smoldering detection, alerting in about 18 seconds—solid for the price, though photoelectric models excel more.
10 years sealed lithium—no changes needed until full replacement.
No, it's standalone. Upgrade to X-Sense XP0A for linking.
XP0A at 90dB + voice; all others 85dB, audible up to 100 feet.
Ionization (like CD01) for fast flaming; photoelectric better for smoldering. Combos cover both.
Every 10 years—check manufacture date on back.
Prioritize safety: Start with our top pick.