Kidde 20SDR-VRF Battery Smoke Detector
- 85 dB alarm with voice Fire announcement
- Two AA batteries included, no wiring
- Wire-free interconnect with up to 12 compatible Kidde alarms
- UL 217 10th Edition, FCC, ETL Listed
- Up to 95% RH operating humidity, 100 F upper rating
- 10-year limited warranty
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Kidde made a battery smoke alarm that links wirelessly with other Kidde units, a good way to add interconnected detection where there is no wiring. It detects smoke only, not carbon monoxide.
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ASIN: B0GF3SXZN1Model: 20SDR-VRFCategory: Smoke Detectors & Fire Alarms
Overview
Kidde designed this battery smoke alarm to mount anywhere without wiring and link wirelessly to compatible Kidde units. When it senses smoke it sounds a loud horn, flashes red and says Fire, and every linked alarm sounds too.
Adding interconnected alarms to basements, lofts and renovations becomes simple because no wires run between units. It covers smoke only, and the batteries are replaceable rather than sealed for life, so they need periodic changes.
Who it's for
Homeowners and landlords extending alarm coverage into unwired spaces will use the wireless link. Homes with gas appliances also need separate CO detection.
Pros and cons
- No wiring required
- Links with other Kidde alarms
- Voice alert plus horn
- Low battery chirp
- Smoke only, no CO
- Batteries need replacing
- Interconnect limited to compatible Kidde models
Performance notes
Detection speed depends on the sensor and its placement, and the maker cites internal testing on smoldering fires. Wireless interconnect relays an alarm to every linked unit, which matters when sleeping far from the fire. Battery power lets it work in outages, with a chirp when cells run low.
Specifications
| Brand | Kidde |
|---|---|
| Model | 20SDR-VRF |
| Dimensions & fit | |
| Item Dimensions D X W X H | 5"D x 5"W x 2"H |
| Item weight | 8.8 ounces |
| Capacity & performance | |
| Upper Temperature Rating | 100 F |
| Power & efficiency | |
| Power Source | Battery Powered (2x AA, included) |
| Compatibility & installation | |
| Compatible Devices | Up to 12 compatible Kidde alarms, wire-free |
| Warranty & support | |
| Manufacturer Warranty Description | 10-Year Limited Warranty |
| Other details | |
| Sensor Type | Electrochemical |
| Alarm | Audible 85 dB, visual red LED, voice |
| Builtin Media | 2x AA Batteries, Mounting Bracket, Smoke Detector, User Guide |
| Operating Humidity | Up to 95% RH, non-condensing |
| Specification met | UL 217 10th Edition, FCC, ETL Listed |
Frequently asked questions
How do I maintain the Kidde 20SDR-VRF?
Replace the two AA batteries when the low battery chirp sounds. The listing gives no cleaning schedule; follow the user guide.
Does it link to my hardwired Kidde alarms?
It connects wire-free with up to 12 compatible Kidde alarms. Different models have different interconnection options, so check the user guide.
Does it detect carbon monoxide?
No. It is a smoke detector only.
What comes in the box?
The detector, 2 AA batteries, a mounting bracket and a user guide.