A smart alarm is typically wireless (although it doesn’t have to be), which means they are less disruptive to install than a hard-wired system.
They have all the same components as a traditional home alarm (control panel, keypad, movement detectors, door contacts, external siren etc.), but are also connected to a secure cloud server typically via your wireless router (aka home broadband), or via GPRS signal over the GSM (mobile phone) network.
The main difference is the level of ‘remote’ control you have over the alarm system and how the smart alarm communicates with you, when activated, wherever you are in the world. Because smart alarm systems do not need to involve an alarm monitoring company, the customer can retain control. Many homeowners prefer this level of involvement in monitoring their home security.