If we do not require coverage from a signal receiving centre, we can install a device that will notify us via voice messages or text (SMS, email). These devices (voice machines, GSM/Internet modules) will notify us if an alarm is activated or a technical issues emerge (power failures,low battery voltage etc) and depending on the individual model, they may offer us further information (system status, arm and intrusion events, zone breaches etc). Additionally, there are certain models that can arm and disarm our system.