Potter SL-DDA Addressable Duct Smoke Detector

The Potter SL-DDA, identified as DDA on the detector housing, is an analog addressable photoelectric duct smoke detector for Potter/Nohmi SLC systems. It includes the housing and DSA detector head, supports air velocities from 100 to 4,000 ft/min, and uses a clear tamper-protected enclosure without serviceable screens or filters. Key Specifications: Type: Analog addressable photoelectric duct smoke detector Core Function(s): Samples air moving through HVAC ducts and reports detected smoke to the connected fire alarm control panel Loop/Protocol: Potter/Nohmi addressable SLC Power: 22 to 24 VDC; 325 uA current draw Indicators/UI: Front power and alarm indication; integrated cover tamper switch Detector Head: DSA photoelectric duct detector head included Air Velocity: 100 to 4,000 ft/min Housing: Gray plastic backbox with clear plastic cover; no screens or filters Model Identification: SL-DDA on packaging; DDA on the detector housing Compatible Detector Head & Sampling Tubes: DSA - Replacement photoelectric duct detector head STN Series - Intake sampling tubes available in 3 ft, 5 ft, and 10 ft lengths System Compatibility: PFC-6000 Series, Potter Plus, and other panels using the Potter/Nohmi addressable protocol