Stand-alone automatic lighting control system: one advantage.

Stand-alone automatic lighting control system: one advantage.

• A. It uses a SCADA system.
• B. Lights must be configured together.
• C. Easy to install and requires only mains power.
• D. It requires an expensive communications network.

Answer: (C)

Stand-alone automatic lighting control systems operate without a central control network, so the key advantage is simple installation and minimal wiring—you only need the existing mains power. Since there’s no need to set up a building-wide communications system or integrate with a SCADA or other management network, you can retrofit or deploy these controls quickly and economically, using local sensors or timers powered by the same electrical supply. In contrast, options that rely on centralized systems would require additional communications infrastructure and configuration, and insisting that lights be configured together would limit flexibility. An expensive communications network would defeat the simplicity that stand-alone setups offer.

Stand-alone automatic lighting control systems operate without a central control network, so the key advantage is simple installation and minimal wiring—you only need the existing mains power. Since there’s no need to set up a building-wide communications system or integrate with a SCADA or other management network, you can retrofit or deploy these controls quickly and economically, using local sensors or timers powered by the same electrical supply. In contrast, options that rely on centralized systems would require additional communications infrastructure and configuration, and insisting that lights be configured together would limit flexibility. An expensive communications network would defeat the simplicity that stand-alone setups offer.