The 868 MHz indoor siren alerts you acoustically and optically in the event of an alarm as soon as the BERGHOCH Funk alarm system triggers an alarm.
For example, you can plug the indoor siren into a socket in another room in the house to have another indoor siren. Power is supplied via the attached 220 volt power plug on the back of the indoor siren.
To use the indoor siren, you need a BERGOCH Funk alarm system.