galaxy home automation on Instagram: "Staircase motion sensor lights use infrared motion sensors to detect human movement. When a person steps onto the staircase, the sensor detects motion and automatically turns ON the step lights ✨. After movement stops, the system waits for a preset time and then switches the lights OFF automatically 🔌. This ensures lights are used only when needed, reducing power wastage ⚡. Key Learning Points: 📘 • No manual switch operation required ❌🔘 • Improves night-t