Overview
The Ubiquiti USL-Environmental is a battery-powered environmental sensor designed for the UniFi Protect ecosystem. It monitors temperature, humidity, ambient light, and water leaks, providing environmental status through Ubiquiti's proprietary SuperLink wireless connectivity.
The sensor is designed for flexible placement in locations where environmental conditions or water presence need to be monitored. It supports adhesive, magnet, and screw mounting and uses a replaceable CR123A lithium battery.
Environmental Monitoring
The USL-Environmental integrates temperature, humidity, ambient-light, and water sensors into a single device. The sensor can therefore monitor multiple environmental conditions without requiring separate sensors for each measurement function.
For water-leak detection, the device also provides a 3.5 mm AUX jack that supports a TRS or TS water-leak probe. This allows the water-sensing function to be extended with a compatible external probe.
SuperLink Connectivity
The sensor communicates using Ubiquiti's proprietary SuperLink wireless protocol. Ubiquiti specifies a maximum SuperLink range of up to 2 km (1.2 mi), subject to the installation environment and wireless conditions.
The USL-Environmental is designed for use with UniFi Protect. A compatible SuperLink Gateway is required for the sensor to communicate with the UniFi Protect ecosystem.
Power and Installation
The sensor operates from a 3V CR123A lithium battery and has a specified maximum power consumption of 34.9 mW. Ubiquiti specifies battery life of up to six years.
The sensor can be installed using adhesive, magnet, or screw mounting. Its IPX5-rated enclosure and specified operating temperature range of -20°C to 40°C allow deployment in a range of indoor and appropriately protected environmental monitoring locations.
Key Features
- Monitors temperature, humidity, ambient light, and water presence
- Proprietary SuperLink wireless connectivity with a specified maximum range of up to 2 km
- 3.5 mm AUX jack supporting a TRS or TS water-leak probe
- CR123A lithium battery operation with up to six years of specified battery life
- Adhesive, magnet, and screw mounting with an IPX5-rated enclosure
Applications
The USL-Environmental can be used with UniFi Protect to monitor environmental conditions in locations such as utility areas, equipment spaces, storage areas, basements, and other locations where temperature, humidity, ambient light, or water presence needs to be monitored.
DC Supplies Product Note
The USL-Environmental requires a compatible SuperLink Gateway for communication with UniFi Protect. When water-leak monitoring is required beyond the sensor's integrated sensing arrangement, the 3.5 mm AUX connection provides support for a compatible TRS or TS water-leak probe.
Specifications
| Specification | Details |
|---|
| Brand | Ubiquiti |
| Part Number / MPN | USL-Environmental |
| Product Type | Environmental Sensor |
| Product Family | UniFi SuperLink |
| UniFi Application Suite | Protect |
| Connectivity | SuperLink, proprietary |
| Temperature Sensor | Yes |
| Humidity Sensor | Yes |
| Ambient Light Sensor | Yes |
| Water Sensor | Yes |
| Water Leak Probe Interface | 3.5 mm AUX jack, TRS or TS |
| SuperLink US Operating Frequency | 915.6–927.6 MHz |
| SuperLink Antenna Gain | 0 dBi |
| Maximum TX Power | 14 dBm |
| Maximum SuperLink Range | Up to 2 km (1.2 mi) |
| Power Method | CR123A lithium battery |
| Supported Voltage | 3V |
| Maximum Power Consumption | 34.9 mW |
| Battery Life | Up to 6 years |
| Mounting | Adhesive, magnet, and screw mount |
| Weatherproofing | IPX5 |
| Device Dimensions | 53 x 49 x 23.5 mm (2.1 x 1.9 x 0.9 in) |
| Mount Dimensions | 41.3 x 36.6 x 3.1 mm (1.6 x 1.4 x 0.1 in) |
| Device Weight | 47.8 g (1.7 oz) |
| Weight with Mount | 70 g (2.5 oz) |
| Enclosure Material | Polycarbonate |
| Mount Material | Galvanized steel |
| Ambient Operating Temperature | -20°C to 40°C (-4°F to 104°F) |
| Ambient Operating Humidity | 10% to 90% non-condensing |
| Certifications | FCC, IC, CE |
| NDAA Compliant | Yes |
FAQs
What does the USL-Environmental monitor?
The sensor monitors temperature, humidity, ambient light, and water presence.
Does the USL-Environmental work with UniFi Protect?
Yes. The sensor is designed for the UniFi Protect application suite and communicates using Ubiquiti's SuperLink wireless technology.
Is a SuperLink Gateway required?
Yes. Ubiquiti specifies that a SuperLink Gateway is required for the USL-Environmental to communicate with UniFi Protect.
What battery does the sensor use?
The USL-Environmental uses a 3V CR123A lithium battery, with a specified battery life of up to six years.
Can an external water-leak probe be connected?
Yes. The sensor provides a 3.5 mm AUX jack that supports a TRS or TS water-leak probe.
How can the sensor be mounted?
The sensor supports adhesive, magnet, and screw mounting.
