Homematic IP siren for indoor use - an effective alarm in the event of unauthorised access This indoor siren attracts attention with a loud acoustic signal and red LEDs. It can be integrated, configured, connected to motion and opening sensors and activated or deactivated via an app or WebUI. It is installed on the wall or ceiling in a dry indoor area. Disassembly or damage will cause the alarm to be triggered. The alarm tone and the lighting duration can be set, as can possible acoustic signals and notification via a push-message to your smartphone. Key ring dongles are available for a practical remote control (see accessories). Features / compatibility - Homematic IP integrates the areas of indoor climate, security, fire and water protection, weather, lighting and shutter control - simply installed, simply extended and simply secure - Acoustic alarm via a piezo speaker ( ≥ 90 dB @ 1 m) and visual alarm via two areas with red LEDs - Options: a) integration via the Homematic IP Access