UniFi SuperLink
Smoke and CO Alarm
Round alarm on the ceiling. A smoke and carbon monoxide alarm that tells your phone, not just the hallway.
Ask usno verified Canadian price yet
GOOD FOR
- Smoke and CO in one. 85 dB alarm. Ten year batteries.
- Certified to the Canadian standards (ULC 531, CSA 6.19).
KNOW BEFORE YOU BUY
- Does not replace the alarms the building code requires unless it meets your local rules. Ask.
What it needs
To make it work.
A SuperLink Gateway in range. Batteries are in the box.
The numbers
Full specs.
| Connectivity | SuperLink (Proprietary) |
|---|---|
| Range | 2 km (1.2 mi) |
| Power | (1) Replaceable lithium battery CR123A (SuperLink connectivity); (2) Non-replaceable lithium batteries L91 (Smoke & CO alarm) |
| Battery life | CR123A: Up to 10 years (SuperLink); L91: 10 years (Smoke & CO) |
| Mounting | Wall and ceiling mount |
| Operating temperature | 0 to 40 C (32 to 104 F) |
| Size | 120 x 48.5 mm diameter (4.7 x 1.9 in) |
| Weight | 311 g (11 oz) |
| Buttons | (1) Function button, (1) Factory reset, (1) Test/silence button, (1) Tamper switch, (1) Deactivation switch |
| Certifications | CE, FCC, IC, CAN/ULC 531, CSA 6.19, EN 14604, EN 50291-1, UL 217, UL 2034 |
| NDAA compliant | Yes |
Source: techspecs.ui.com, verified 2026-09-01. Model USL-Smoke.
Keep reading
All UniFi SuperLink sensors compared
Security cameras and access control
Cameras compared
Doorbells compared
Every UniFi price, one list
Want it installed?
We mount it, pair it to the gateway and set the alarm rules in Protect. Book a design assessment and the fee comes off the install.