A basic alarm system typically requires how many power sources?

A basic alarm system typically requires two power sources to ensure reliable operation. The primary power source is usually an AC power supply, which is often connected to the building's electrical system. This supplies the necessary voltage for the alarm system's components under normal conditions.

The second power source is a backup power supply, commonly a battery, which is crucial for maintaining functionality during power outages or when the primary supply fails. This backup ensures that the alarm system remains operational at all times, providing security even when there are disruptions in electrical service. This redundancy is a standard practice in alarm system design, as it enhances reliability and protects against potential vulnerabilities related to power supply failure.