The Trane SL-2000-P-3WTRA (SEN01789) Photoelectric Smoke Detector Sensor is an essential safety component designed for HVAC systems. It continuously monitors the presence of smoke particles in air-handling units, alerting systems early to potential fire hazards. Its photoelectric sensing technology ensures highly accurate detection of smoldering fires, making it ideal for both residential and commercial applications. Key Features Photoelectric sensing for reliable smoke detection Designed for integration in HVAC duct systems Fast and accurate detection of slow-burning fires Factory original Trane sensor ensures system compatibility Includes 3/4" adapter for quick installation and maintenance Specifications Part Numbers: SL-2000-P-3WTRA, SEN01789 Sensor Type: Photoelectric Application: HVAC duct smoke detection Mount Type: Duct mount with included adapter Voltage: 24 VAC/DC Alarm Response Time: Less than 15 seconds to 2.5%/ft obscuration Compatible Models (Short List) THC072F3E0A THC092E4R0A THC120F3EKA YHC120F3RHA0LP0C0A2A000A0B000E THC102F4RKA YHD240G3RLD15P1C1A1A700AE00000 THC092F4RGA THC102E3R0A YHD150G3RLD15P0C1A1A700AH00000 YHC047E3RLA23H0D1A1A7B0CH0000C Why Choose This Item Choose the Trane SL-2000-P-3WTRA Smoke Detector for dependable, early smoke detection in your HVAC system. With its photoelectric accuracy, OEM build quality, and wide model compatibility, it?s a trusted choice for ensuring occupant safety and preventing property damage. Perfect for building code compliance and peace of mind.