X-Sense SD19-W Interconnected Smoke Detector
- Up to 18 X-Sense Link+ alarms interconnected
- 10-year sealed lithium battery
- Photoelectric sensor
- ETL listed to UL 217
- No wiring needed to install
- 4.8 x 1.7 x 4.8 inches
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A wireless interconnected smoke alarm with a sealed long-life battery and no wiring needed. It senses smoke only and links only with X-Sense Link+ alarms.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B09K4YKH2XModel: SD19-WCategory: Smoke Detectors & Fire Alarms
Overview
X-Sense links this battery smoke alarm wirelessly to other Link+ alarms, so when one detects smoke every connected unit sounds together. A sealed lithium battery powers it for its whole service life.
Homes without alarm wiring get whole-house interconnection across floors with no electrician and no battery changes. It senses smoke only, and the listing gives no warranty term or app connection.
Who it's for
Multi-floor homes, older houses without hardwired alarms and rentals suit the wireless link. Anyone needing CO detection must add separate CO protection.
Pros and cons
- Wireless interconnection across floors
- No battery changes for years
- Fewer cooking false alarms
- Works with optional remote
- Smoke only, no CO sensing
- Warranty term not listed
- Links only with X-Sense Link+ alarms
Performance notes
Detection relies on the photoelectric sensor, which reduces nuisance alarms from cooking fumes and steam. When one unit senses smoke, the wireless link triggers every paired alarm so a fire on one floor is heard on the others.
Specifications
| Brand | X-Sense |
|---|---|
| Model | SD19-W |
| Dimensions & fit | |
| Item Dimensions D X W X H | 4.8 x 1.7 x 4.8 inches |
| Power & efficiency | |
| Power Source | Battery, sealed 10-year lithium |
| Battery Average Life | Up to 10 years |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Compatible Devices | Up to 18 X-Sense Link+ alarms incl. SC07-W, SC01-W, SC06-W; optional X-Sense remote |
| Included components | |
| Unit Count | 1 Count |
| Other details | |
| Sensor Type | Photoelectric |
| Alarm | Audible, interconnected |
| Builtin Media | 1 smoke alarm |
| Certification | ETL listed to UL 217 |
| Product Style | modern |
Frequently asked questions
How do I test the X-Sense SD19-W?
Press the one-button test/silence. It also runs self-tests, and an optional X-Sense remote can test and silence connected alarms.
Which alarms link with the X-Sense SD19-W?
X-Sense Link+ alarms, including the SC07-W, SC01-W and SC06-W.
Does the X-Sense SD19-W detect carbon monoxide?
No. It is a photoelectric smoke alarm.