DC-9102E conventional photoelectric smoke detector is a new-generation product. With built-in microprocessor, the detector is highly fixed with reliable fire judging program, which make it stable and reliable performance. When the detector checks fire signal, it will send fire information to the control panel or addressable zone monitor unit by means of current changing. The detector keeps turning on the LED to indicate alarm state until it is reset. The detector is developed from sensing chamber by scattering theory. It has the ability to resist dust contamination and environmental light.