




The Ubiquiti Relay (USL-Relay) is a compact SuperLink relay module engineered to seamlessly integrate third-party sensors, alarms, and signaling devices into your UniFi ecosystem. With dedicated input/output (I/O) interfaces, it bridges the gap between legacy hardware and modern UniFi Protect deployments — making smart automation simpler than ever.
Featuring flexible mounting options (adhesive, wall, and DIN rail), broad power compatibility (12V / 24V / 48V DC), and an impressive 2 km wireless SuperLink range, the USL-Relay is the ideal solution for residential automation, commercial security installations, and industrial control applications.
| Specification | Details |
|---|---|
| Brand | Ubiquiti |
| Model | USL-Relay |
| Dimensions | 50 x 47.6 x 28 mm (2 × 1.9 × 1.1") |
| Weight | 100 g (3.5 oz) |
| Mounting Options | Adhesive, Wall, DIN Rail |
| UniFi Application Suite | UniFi Protect |
| Wireless Protocol | SuperLink (Proprietary) |
| Operating Frequency (US) | 915.6 – 927.6 MHz |
| Operating Frequency (EU) | 865.1 – 869.5 MHz |
| Antenna Gain | 1 dBi |
| Max. TX Power | 14 dBm |
| Max. Range | 2 km (1.2 mi) |
| Power Method | 12V DC / 24V DC / 48V DC |
| Output Specification |
O1/COM/O2 — Dry contact (12-48V DC, 12-240V AC) 10A/port, UL max: 12A, IEC max: 16A |
| Input Specification |
I1/I2 — Dry contact, Open/Short (GND) Integrated 5V TVS protection |
| Power Input Range | 12–48V DC, max. 48V |
| Over-Temperature Protection (OTP) | 85°C (185°F) |
| Buttons | (1) Factory reset, (1) Test button |
| LED Indicators |
(1) LoRa / Status: RGBW (2) Signal Input / Relay Output: W |
| Enclosure Material | Polycarbonate |
| Mount Material | Polycarbonate |
| Operating Temperature | 0°C – 40°C (32°F – 104°F) |
| Operating Humidity | 10% – 90% noncondensing |
| NDAA Compliant | Yes |
| Certifications | CE, FCC, IC |
The Ubiquiti Relay (USL-Relay) combines a compact form factor, flexible I/O capabilities, and long-range SuperLink wireless technology to bridge third-party devices with your UniFi Protect ecosystem. A professional-grade relay module designed to bring smart, scalable control to your security, automation, and signaling installations.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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