Ubiquiti USL-SIREN All-weather SuperLink siren 110 dB alarm

Ubiquiti USL-SIREN All-Weather SuperLink Siren

Overview

The Ubiquiti USL-SIREN is a wall- or ceiling-mounted outdoor siren designed for UniFi Protect deployments requiring audible alarm capabilities across distributed security zones. The USL-SIREN delivers 110 dB output in an IP56-rated enclosure suitable for harsh environmental conditions, operating reliably between −30 and 50° C. Built from aluminum alloy and polycarbonate construction, this siren integrates directly into UniFi Protect ecosystems via web and native mobile applications, enabling centralized alerting orchestration alongside video and sensor networks.

Key Features

The siren operates on four CR123A batteries with a nominal 5W power draw, eliminating the need for line-voltage wiring in remote or difficult-to-reach locations. Management occurs through the UniFi Protect web interface or iOS and Android applications, allowing integrators to arm, test, and trigger alerts from a unified control plane. The compact form factor measures 139.9 × 139.9 × 35 mm and weighs 345 grams, accommodating both flush and surface-mounted installations. A single power button supports manual override and commissioning workflows. The USL-SIREN carries FCC, IC, and CE certifications and meets NDAA compliance requirements, clearing procurement requirements for federal and institutional deployments.

Deployment Scenarios

The USL-SIREN addresses access-control verification, intrusion response, and area evacuation across perimeter security, parking structures, equipment yards, and entry vestibules. Battery-powered operation permits rapid deployment without infrastructure modifications—critical for seasonal facilities, leased spaces, or phased rollouts. Its IP56 rating handles direct spray and dust ingress, supporting outdoor mounting on building facades, fence lines, and utility structures where traditional speakers or horns prove impractical.

Network Integration

The siren pairs with UniFi Protect controllers via the SuperLink wireless protocol, eliminating Ethernet dependencies. Integrators configure alert triggers through automation rules tied to camera detection events, sensor thresholds, or manual activation. The MPN USL-SIREN communicates within the same UniFi ecosystem as cameras, access points, and environmental sensors, enabling coordinated multi-device responses without external integration layers.

Installation Notes

Mount the unit vertically or horizontally on wall or ceiling surfaces using supplied fasteners, ensuring sound projection toward intended coverage areas. Load batteries before activation; test audible output during commissioning to verify adequate dB levels for the deployment environment. The single power button allows field staff to confirm operation without application access during initial site surveys.

Jerry Tildsen, Senior Network Architect

"The USL-SIREN simplifies large-campus alerting without adding management overhead. I deployed the Ubiquiti USL-SIREN across a 12-building education campus, and the battery autonomy meant we avoided conduit runs entirely. Integrators often overlook audible feedback—this fills that gap elegantly within Protect. One consideration: at 110 dB, placement matters; test coverage before full-scale deployment."