Ubiquiti Relay (USL-Relay) – Compact SuperLink Relay with I/O Integration for Third-Party Sensors and Signaling Devices

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.

Key Features

• Compact SuperLink Relay Design: Ultra-small 50 x 47.6 x 28 mm form factor fits virtually any installation
• Flexible I/O Integration: Dedicated input and output terminals for third-party sensors, alarms, and signaling devices
• UniFi Protect Integration: Native compatibility with the UniFi Protect application suite
• Long-Range Wireless: SuperLink technology delivers up to 2 km (1.2 mi) of transmission range
• Multi-Voltage Power Support: 12V / 24V / 48V DC input for versatile deployment
• Versatile Mounting: Adhesive, wall, and DIN rail mounting options
• Built-In Protection Circuits: 5V TVS input protection and 85°C over-temperature protection (OTP)
• RGBW Status LED Indicators: Visual feedback for LoRa connection, signal input, and relay output
• NDAA Compliant: Suitable for government and security-conscious deployments

Connectivity & Performance

• Wireless Protocol: SuperLink (Proprietary)
• Operating Frequency:
  • US: 915.6 – 927.6 MHz
  • EU: 865.1 – 869.5 MHz
• Antenna Gain (SuperLink): 1 dBi
• Max. TX Power (SuperLink): 14 dBm
• Max. Range (SuperLink): 2 km (1.2 mi)

Terminal Blocks & I/O Specifications

• 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 85°C (185°F) over-temperature protection (OTP)

Technical Specifications

Software & Application Requirements

• Web Application: UniFi Protect
• Mobile App: UniFi Protect (iOS™ and Android™)

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.