This extension of the Gigaset alarm system immediately triggers an alarm in case of suspected burglary. The alarm siren can be operated manually via the button or via the Gigaset elements app. Loud, deterrent alarm sound (100 dB). Automatic shutdown directly via Gigaset elements app. Simply plug into an electrical outlet. Updateable (wireless via the Gigaset elements App). Compatible with Gigaset elements alarm systems S, M, and L.