Deliver immediate, unmistakable alerting at the perimeter with the Ubiquiti UP-SIREN-POE. Designed for outdoor deployment, it combines a 110 dB siren with emergency LED lighting to help security teams respond quickly when access events escalate. PoE power simplifies installation by reducing the need for separate electrical runs, which is especially valuable when you need to place alerting hardware where it has the most impact. This model fits access control environments that need a visible and audible deterrent tied to controller or panel workflows. The multi-technology access control support gives it flexibility in mixed security stacks, while the weather-ready design supports consistent operation outside the rack and inside the real-world conditions of entrances, loading areas, and secured perimeters. At 1.35 lbs, it stays compact enough for practical mounting without sacrificing presence. For teams comparing lower-cost alarm devices, the difference is in deployment quality: PoE simplifies infrastructure, outdoor readiness broadens placement options, and the integrated LED response adds another layer of attention when seconds matter.