Somfy Outdoor Siren In the event of a detection, this outdoor siren emits a loud 112 dB noise and bright flash to warn neighbors and prevent break-ins before they occur. The outdoor siren offers an effective outdoor home alarm device. What\'s in the box Outdoor Siren with built-in batteries, user manual Easy to install Easywireless installation, mounts using a template, screws and dowels included in the pack, the siren must be positioned as high as possible to ensure the largest sound diffusion and must be visible to discourage intruders, for outdoor use on any surface (IP 43), automatically shuts off after 3 minutes, audible confirmation of arming and disarming Secure and reliable Sound level: 112 dB, built-in deterrent orange flash, auto-protection if moved or removed when system is activated, up to 200 m radio range between the siren and the Link or Somfy One/One+ (in open spaces), 2-year battery life with normal use, automatic low battery notifications