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The Kidde 20SDR Smoke Detector features an 85-decibel alarm with enhanced photoelectric sensing technology to reduce false alerts. Powered by 2 AA batteries (included) for easy, wire-free installation, it offers 3 LED indicators for real-time status updates and a self-testing function to ensure reliability. Designed to meet UL 217 9th Edition and FCC standards, it includes low battery alerts and a 10-year limited warranty with end-of-life reminders, making it a trusted choice for modern home safety.


| Brand | Kidde |
| Style | 9th Edition |
| Power Source | Battery Powered |
| Color | White |
| Product Dimensions | 1.88"D x 5"W x 5"H |
| Item Weight | 0.57 Pounds |
| Alarm | Smoke Detector |
| Operating Humidity | Up to 95% relative humidity (RH), non-condensing |
| Upper Temperature Rating | 100 Degrees Fahrenheit |
| Sensor Type | Photoelectric |
| Global Trade Identification Number | 00047871328161 |
| Material | Plastic |
| Number of Items | 1 |
| Manufacturer | Kidde |
| UPC | 047871328161 |
| Part Number | 21032816 |
| Item Weight | 9.1 ounces |
| Item model number | 20SDR |
| Batteries | 2 AA batteries required. (included) |
| Size | 1 Pack |
| Pattern | Kidde DETECT |
| Shape | Circular |
| Item Package Quantity | 1 |
| Included Components | 2 AA Batteries, Alarm, Mounting Hardware, User Guide |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
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