Which feature is common among modern alarm systems?

Modern alarm systems are increasingly equipped with remote notification features, which allow users to receive alerts and updates directly on their smartphones, tablets, or computers. This capability enhances the effectiveness of security systems by ensuring that users can be informed about potential threats or alarms regardless of their location.

With remote notifications, owners can monitor their properties more effectively, even when they're away. This feature often includes real-time alerts for events like unauthorized entry, system faults, or environmental hazards (like smoke or flooding), providing peace of mind and immediate feedback to users when it matters most.

The other options do not reflect the commonality of features in modern alarm systems. Wired connectivity alone does not encapsulate modern advancements, as many systems now utilize wireless technology for more flexibility. Manual operation is typically being phased out in favor of automation and smart technology, which simplifies user interaction. Visual alarms are just one type of alert and do not address the broader ability for remote notifications that encompass a variety of communication methods.