What method should power the alarm system?

What method should power the alarm system?

• A. Normal power supply
• B. Battery backup only
• C. Solar power
• D. Wind

Answer: (A)

The main idea is that residential alarm systems rely on the normal electrical supply as the primary power source, with a rechargeable backup battery to carry things through outages. This setup ensures the panel runs continuously during regular use and automatically switches to power from the battery if the main power fails, keeping sensors and alerts active. Battery backup alone wouldn’t provide ongoing power once the battery depletes, and solar or wind generation isn’t standard for typical home panels and adds extra complexity. So, the best approach is a normal power supply with a battery backup.

The main idea is that residential alarm systems rely on the normal electrical supply as the primary power source, with a rechargeable backup battery to carry things through outages. This setup ensures the panel runs continuously during regular use and automatically switches to power from the battery if the main power fails, keeping sensors and alerts active. Battery backup alone wouldn’t provide ongoing power once the battery depletes, and solar or wind generation isn’t standard for typical home panels and adds extra complexity. So, the best approach is a normal power supply with a battery backup.