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This 2-pack of 20SD10 smoke detectors features a powerful 85-decibel alarm with synchronized red LED alerts, a maintenance-free 10-year battery, and advanced sensing technology to reduce false alarms. Compliant with UL 217 9th Edition and FCC standards, it includes triple LED indicators for real-time status and self-testing capabilities to ensure continuous protection.


| Brand | Kidde |
| Style | 9th Edition |
| Power Source | Battery Powered |
| Color | White |
| Product Dimensions | 1.88"D x 5"W x 5"H |
| Item Weight | 0.8 Pounds |
| Alarm | Smoke Alarm |
| Operating Humidity | up to 95% relative humidity (RH), non-condensing |
| Upper Temperature Rating | 100 Degrees Fahrenheit |
| Sensor Type | Photoelectric |
| Material | Plastic |
| Number of Items | 1 |
| Manufacturer | Kidde |
| UPC | 047871328215 |
| Part Number | 21032821 |
| Item Weight | 12.8 ounces |
| Item model number | 20SD10 |
| Size | 2 Pack |
| Shape | Circular |
| Item Package Quantity | 1 |
| Included Components | Mounting Hardware, Two Alarm, User Guide |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |