Ace the Certified Energy Manager Exam 2026 – Power Up Your Career Potential!

Occupancy sensors are designed to detect the presence of people in a space and to control lighting and other systems accordingly. They contribute to energy savings primarily by automatically turning off lights in unoccupied spaces. When the sensor detects that no motion is present over a certain period of time, it can switch off the lights or reduce their brightness. This ensures that energy is not wasted on lighting empty rooms, significantly lowering energy consumption and costs.

While other options may touch on aspects of energy management and data collection, they do not directly address how occupancy sensors primarily function. For instance, increasing occupancy rates in buildings or providing data for energy audits are not actions performed by occupancy sensors; instead, they relate to building usage and energy assessment processes. Adjusting thermostat settings based on occupancy can be a separate function typically associated with occupancy sensing technology but is distinct from the primary role of lighting control in achieving immediate energy savings.