Corridors and staircases
Buildings typically use a stair timer system that lights up 4–6 floors for 3 minutes when a button is pressed. In a simple calculation, if a resident enters the building and presses the button, the stair timer will illuminate six floors for 3 minutes each, resulting in a total lighting time of 18 minutes (3 × 6).
After installing the Lotus motion and light sensor system, lighting remains dim at the building entrance. When a resident enters, only the entrance lighting increases and operates for 3 minutes. The resident then takes the elevator and exits on a specific floor, where only that floor is illuminated for 3 minutes.
This results in a total lighting time of 6 minutes (3 × 2). Comparing 18 minutes before installation with 6 minutes after installation, electricity usage drops to 33% (6 ÷ 18), meaning a minimum savings of 67% in electricity bills. Savings increase with more floors, in addition to extending lamp lifespan and eliminating the cost of stair timers and faulty switches.
From a security perspective, it becomes easy for security staff to identify whether a floor is occupied based on whether it is lit. If an unknown person uses the elevator, it is possible to track which floor they exited and whether they moved between floors via the stairs.
Some buildings use stair timers to illuminate multiple floors—for example, 12 floors. In such cases, installing the system can achieve up to 78% savings in electricity consumption.
Beyond energy savings, the system also enhances comfort and convenience, as residents no longer need to press lighting switches while carrying bags or items.