The SI Tyxal + is an indoor siren for Tyxal + alarm systems that secures the home and warns in the event of a break-in. The siren is attached with screws, is connected wirelessly to the control panel and is powered by batteries that last up to 10 years. To work properly, the SI Tyxal + must be connected to a CS 8000 Tyxal + control panel. In the event of a break-in, depending on the settings selected, the alarm can sound with an alarm tone that can be set in 5 tones up to 109 decibels. The siren is protected against sabotage and is automatically triggered if someone tampers with the siren without authorization. A bell mode signals when a person enters a room (in conjunction with one or more motion detectors from the Tyxal + series).