Air2-FD100 not only detects smoke—it also monitors dust levels inside the optical chamber, providing an analog reading that can be viewed directly from the keypad. This smart feature allows maintenance to be scheduled only when truly necessary, helping maintain high system efficiency. The tri-color LED (green, yellow, red) clearly indicates operating status, including normal operation, low battery, cleaning required, alarm, or fault. All settings—including sensitivity and optional LED deactivation—are configurable via radio, with no need for physical access to the device.