Duct Smoke Detector
A duct detector draws air samples through piping or tubing from the air duct to the detector sampling ports. At the detector, the air sample is analyzed for products of combustion by ionization or photoelectric methods.
Dual Technology Motion Detector
Dual-Technology Passive Infrared/Microwave sensors use a combination of both microwave and passive infrared technology in combination with AND logic to provide a lower False Alarm Rate (FAR) sensor than either of the sensors independently.