Overview
The Ubiquiti USL-Smoke-US is a battery-powered Smoke and CO Alarm designed for residential life-safety monitoring through UniFi Protect. It combines smoke and carbon monoxide detection with Ubiquiti SuperLink wireless connectivity, allowing alarm events and device status to be integrated into the UniFi Protect platform. The U.S. variant operates on the 915.6–927.6 MHz SuperLink frequency range and provides up to 2 km of specified SuperLink range.
Smoke and Carbon Monoxide Detection
The USL-Smoke-US provides dedicated smoke and carbon monoxide detection in one ceiling- or wall-mounted device. The smoke detection technology is photoelectric, while the CO sensor uses electrochemical detection. This combination provides two separate sensing functions within the same alarm.
SuperLink Wireless Connectivity
The alarm communicates using Ubiquiti's proprietary SuperLink wireless technology. The U.S. radio operates from 915.6 to 927.6 MHz, with a maximum transmit power of 14 dBm and a specified maximum range of up to 2 km. A SuperLink Gateway is required for SuperLink connectivity and integration with the UniFi Protect environment.
Long-Life Battery Operation
The SuperLink communication section uses a replaceable CR123A lithium battery with a specified life of up to 10 years. The smoke and CO alarm functions use non-replaceable L91 lithium batteries, also specified for 10 years. The device operates from a 3V supported voltage range and has a maximum power consumption of 510mW.
UniFi Protect Integration
The USL-Smoke-US is managed through UniFi Protect. It can be accessed through the UniFi Protect web application and UniFi Protect mobile applications for iOS and Android, subject to the required SuperLink Gateway infrastructure.
Indoor Installation
The alarm is designed for indoor residential installation and supports wall or ceiling mounting. Its polycarbonate enclosure and mounting material are specified for an ambient operating range of 0 to 40°C and 10 to 90% noncondensing humidity.
Key Features
- Combined photoelectric smoke and electrochemical CO detection
- SuperLink wireless connectivity with up to 2 km specified range
- 85 dB alarm sound level measured at 3 meters
- Up to 10-year battery life for SuperLink and smoke/CO functions
- UniFi Protect management through web and mobile applications
DC Supplies Product Note
The USL-Smoke-US is a battery-powered device and does not use PoE or an external DC power adapter. The SuperLink communication circuit uses a replaceable CR123A lithium battery, while the smoke and CO alarm functions use internal non-replaceable L91 lithium batteries. A SuperLink Gateway is required for wireless connectivity.
Specifications
| Specification | Details |
|---|
| Brand | Ubiquiti |
| Part Number / MPN | USL-Smoke-US |
| Product Type | Smoke and CO Alarm |
| Product Name | Smoke and CO Alarm |
| Region | U.S. variant |
| Smoke Sensor | Yes, photoelectric |
| CO Sensor | Yes, electrochemical |
| Connectivity | SuperLink, proprietary |
| U.S. Operating Frequency | 915.6–927.6 MHz |
| SuperLink Antenna Gain | 1 dBi |
| Maximum SuperLink TX Power | 14 dBm |
| Maximum SuperLink Range | 2 km (1.2 mi) |
| Alarm Sound Level | 85 dB @ 3m |
| Maximum Power Consumption | 510mW |
| Supported Voltage | 3V |
| SuperLink Battery | Replaceable CR123A lithium battery |
| SuperLink Battery Life | Up to 10 years |
| Smoke & CO Battery | Non-replaceable L91 lithium batteries |
| Smoke & CO Battery Life | 10 years |
| Mounting | Wall and ceiling |
| Dimensions | Ø120 × 48.5mm |
| Weight | 311g |
| Enclosure Material | Polycarbonate |
| Mount Material | Polycarbonate |
| Controls | Function, factory reset, test/silence, tamper, deactivation |
| LEDs | Status: blue/white; Signal: blue/red |
| Operating Temperature | 0 to 40°C |
| Operating Humidity | 10–90% noncondensing |
| Application | UniFi Protect |
| Mobile App | UniFi Protect for iOS and Android |
| NDAA Compliant | Yes |
| Certifications | CE, FCC, IC, CAN/ULC 531, CSA 6.19, EN 14604, EN 50291-1, UL 217, UL 2034 |
Frequently Asked Questions
What does the Ubiquiti USL-Smoke-US detect?
It detects both smoke and carbon monoxide. The smoke sensor is photoelectric and the CO sensor is electrochemical.
Does the USL-Smoke-US use Wi-Fi?
No. The alarm communicates using Ubiquiti's proprietary SuperLink wireless technology. A SuperLink Gateway is required for connectivity.
How far can the USL-Smoke-US communicate?
Ubiquiti specifies a maximum SuperLink range of up to 2 km (1.2 miles), subject to deployment conditions.
How long do the batteries last?
The replaceable CR123A battery used for SuperLink connectivity is specified for up to 10 years. The internal L91 batteries supporting smoke and CO alarm functions are also specified for 10 years.
How loud is the built-in alarm?
The specified alarm sound level is 85 dB measured at 3 meters.
