The USL-Relay is a compact SuperLink I/O relay module designed for seamless integration of third-party sensors and signaling devices within the UniFi Protect physical security ecosystem. With wireless SuperLink connectivity reaching up to 2 km line of sight, it eliminates the need for network cabling between relay points and security infrastructure. Dual dry contact relay outputs support both AC and DC circuits up to 240V AC / 48V DC at 10A per port, while dual dry contact signal inputs feature integrated 5V TVS protection making it ideal for access control panels, alarm systems, door strikes, and industrial signaling devices.

The USL-Relay accepts a wide 1248V DC input voltage range, compatible with common security power supplies and battery backup systems. Flexible mounting options adhesive, wall screw, or DIN rail suit installation in control cabinets, server rooms, and space-constrained locations. Each input and output is independently configurable via the UniFi Protect web, iOS, and Android apps. Note: a SuperLink Gateway is required for operation.