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Ubiquiti Relay is a module that enables the connection of third-party sensors to the UniFi Protect system. It features two input connectors for supporting sensors and two output connectors for connecting signaling devices, such as alarm sirens. USL-Relay provides SuperLink wireless communication and is compatible with the SuperLink Gateway. Power can be supplied via DC terminals, with an input voltage of 12, 24, or 48 V DC. The module is designed for wall mounting (using screws or adhesive tape) or DIN rail installation. It allows integration of an existing sensor system with UniFi Protect and SuperLink communication, making it easier to modernize an alarm system at a given location.
Connecting Third-Party Sensors to UniFi Protect
The offered product is a special module that enables the connection of third-party sensors to the UniFi Protect system. It is ideal for expanding or upgrading an existing system.


SuperLink Wireless Connectivity
The module provides SuperLink wireless communication, allowing it to connect to a SuperLink Gateway. Transmission operates in the 865.1–869.5 MHz frequency range, and according to the manufacturer, the range can reach up to 2 km with full line of sight.
2 Inputs, 2 Outputs
The USL-Relay is equipped with 2 input connectors for connecting sensors and 2 output connectors for connecting signaling devices. Only dry (voltage-free) contacts are supported.


Power Supply 12 / 24 / 48 V DC
Power can be supplied to the device via terminal blocks. The input voltage is 12, 24, or 48 V DC, allowing the USL-Relay to easily adapt to an existing power system without the need for modifications.
Wall or DIN Rail Mounting
The package includes mounting accessories that allow the USL-Relay to be attached to a wall or a DIN rail. For wall installation, you can use standard mounting screws or adhesive tape.

Specifications
| Ubiquiti USL-Relay | |
| Overview | |
|---|---|
| Dimensions | 50 x 47.6 x 28 mm (2 × 1.9 × 1.1") |
| Mounting | Adhesive, wall and DIN rail mount |
| UniFi Application Suite | Protect |
| Performance | |
| Connectivity | SuperLink |
| Operating Frequency | 865.1 – 869.5 MHz |
| Antenna Gain | 1 dBi |
| Max. TX Power | 14 dBm |
| Max. Range | 2 km |
| Hardware | |
| Power Method | 12V DC / 24V DC / 48V DC |
| Weight | 100 g (3.5 oz) |
| Enclosure Material | Polycarbonate |
| Mount Material | Polycarbonate |
| Buttons |
(1) Factory reset (1) Test button |
| Output |
O1/COM/O2 Dry contact only (12-48V DC, 12-240V AC) 10A/port, UL total max: 12A IEC total max: 16A |
| Input |
I1/I2 Dry contact only Open/Short (GND) Integrated 5V TVS protection |
| Power |
VDD/GND 12–48V DC, max. 48V Integrated over-temperature protection (OTP) at 85°C (185°F) |
| LEDs |
(1) LoRa, Status: RGBW (2) Signal input, Relay output: W |
| Ambient Operating Temperature | 0 to 40° C (32 to 104° F) |
| Ambient Operating Humidity | 10 to 90% noncondensing |
| NDAA Compliant | Yes |
| Software | |
| Application Requirements |
Web Application: UniFi Protect Mobile App: UniFi Protect iOS™ and Android™ |





