Kidde 20SDR Battery Smoke Detector
- Power Source: Battery
- Sensor Type: Photoelectric
- Alarm: Smoke Detector
- Product Style: 10th Edition
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A solid standard-battery alarm with the hush button its sealed sibling lacks. Pick the 20SD10 instead if avoiding battery changes matters more than the hush feature.
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ASIN: B0CX6RMV4BModel: 20SDRCategory: Smoke Detectors & Fire Alarms
Overview
A Kidde smoke alarm powered by two included AA batteries rather than a sealed cell, giving an easy no-wiring install with a test and hush button. Sounds an 85 dB alarm with a red LED status light and carries a 10-year limited warranty.
Unlike Kidde's sealed 10-year unit, this model takes standard AA batteries, which means periodic changes but also batteries found anywhere rather than replacing the whole alarm at end of life. It adds a hush button the sealed 20SD10 does not list, useful for silencing a cooking-triggered alarm without disabling detection. It is sold as a single unit, not a wired or interconnected system.
- Two AA batteries included, no wiring needed
- Test and hush button silences nuisance alarms
- 85 dB alarm with red LED status light
- 10-year limited warranty from purchase
Who it's for
Households that would rather swap a couple of AA batteries occasionally than replace an entire sealed alarm, and want a hush button on hand for kitchen false alarms. Not the choice for anyone wanting a decade of zero maintenance.
Pros and cons
- Test and hush button for false alarms
- Uses common AA batteries, sold anywhere
- 10-year limited warranty from date of purchase
- Batteries need periodic replacement, unlike sealed models
- No interconnect capability listed for this model
Performance notes
Two AA batteries power the alarm directly, which keeps installation to mounting the bracket and dropping batteries in, no wiring required. The test and hush button lets a resident confirm the alarm works and temporarily quiet a nuisance trigger without pulling batteries or disabling the sensor. The unit is rated to UL 217 10th edition and FCC standards, with a 10-year limited warranty from purchase.
Specifications
| Brand | Kidde |
|---|---|
| Model | 20SDR |
| Dimensions & fit | |
| Item Weight | 0.84 pounds |
| Item Dimensions D X W X H | 1.9 × 5 × 5 inches |
| Capacity & performance | |
| Upper Temperature Rating | 100 °F |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Enclosure Material | Plastic |
| Color | White |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Manufacturer Warranty Description | 10-Year Limited Warranty |
| Other details | |
| Sensor Type | Photoelectric |
| Alarm | Smoke Detector |
| Product Style | 10th Edition |
| Number Of Items | 1 |
| Mfr Part Number | 21032816 |
| Builtin Media | 2 AA Batteries, Alarm, Mounting Hardware, User Guide |
| Item Type Name | Smoke Alarm |
| Operating Humidity | Up to 95% relative humidity (RH), non-condensing |
| Item Highlight | LED Status Lights And Loud 85 DB Alarm, Ideal For Homes And Apartments |
Frequently asked questions
What batteries does the Kidde 20SDR use?
Two AA batteries, included in the box.
Does the 20SDR have a hush button?
Yes, a test and hush button lets you confirm it works and temporarily silence a nuisance alarm without disabling the detector.
Is the 20SDR interconnectable with other alarms?
The listing does not describe interconnect wiring for this model. For linked alarms, see Kidde's hardwired 20SAR.