What component ensures continued operation of the alarm system during a power outage?

What component ensures continued operation of the alarm system during a power outage?

• A. Solar panel
• B. Main power supply
• C. Siren
• D. Back-up battery

Answer: (D)

When the main power fails, the system needs an independent power source to stay active. The back-up battery provides that power automatically, continuing to run the control panel, sensors, and communications so the alarm system can function during the outage. A solar panel can help recharge or supplement power, but it isn’t a guaranteed, continuous power source in an outage (it depends on sunlight and conditions). The main power supply is what the system uses under normal conditions and fails during an outage, and the siren by itself doesn’t ensure continuous operation without power. So the back-up battery is the component that keeps the system operating when the power goes out.

When the main power fails, the system needs an independent power source to stay active. The back-up battery provides that power automatically, continuing to run the control panel, sensors, and communications so the alarm system can function during the outage. A solar panel can help recharge or supplement power, but it isn’t a guaranteed, continuous power source in an outage (it depends on sunlight and conditions). The main power supply is what the system uses under normal conditions and fails during an outage, and the siren by itself doesn’t ensure continuous operation without power. So the back-up battery is the component that keeps the system operating when the power goes out.