Where should motion sensors be installed to monitor energy use and security?

Where should motion sensors be installed to monitor energy use and security?

• A. Storage rooms
• B. Compactor rooms
• C. Public bathrooms
• D. Lobby areas

Answer: (C)

Motion sensors are most effective in spaces where occupancy is unpredictable and lighting or ventilation should closely match actual use. Public restrooms fit this best because they’re often used intermittently and can waste a lot of energy if lights and exhaust fans stay on after people leave. A sensor ensures lights and ventilation come on as soon as someone enters and turn off once the space is vacated, saving energy while maintaining safety and visibility for users. It also helps security by indicating when the space is occupied outside normal hours. Storage rooms and compactor rooms are typically locked or have low, irregular occupancy, so sensors offer less energy-saving impact and security value there. Lobby areas are usually more actively monitored and already designed with occupancy controls, so they’re not as uniquely suited as public restrooms for combining energy savings with security monitoring.

Motion sensors are most effective in spaces where occupancy is unpredictable and lighting or ventilation should closely match actual use. Public restrooms fit this best because they’re often used intermittently and can waste a lot of energy if lights and exhaust fans stay on after people leave. A sensor ensures lights and ventilation come on as soon as someone enters and turn off once the space is vacated, saving energy while maintaining safety and visibility for users. It also helps security by indicating when the space is occupied outside normal hours.

Storage rooms and compactor rooms are typically locked or have low, irregular occupancy, so sensors offer less energy-saving impact and security value there. Lobby areas are usually more actively monitored and already designed with occupancy controls, so they’re not as uniquely suited as public restrooms for combining energy savings with security monitoring.